Wopke Hoekstra’s own political family has led calls to tweak existing rules.

The bank said about a fifth of all built structures and a tenth of Myanmar’s roads had been damaged by widespread flooding during heavy monsoon rains.

The bonds have come under fire for greenwashing claims and over difficulties in tracking the sustainable goals.

Four more mobile desalination plants will begin operating next October, each producing 1 million cubic feet of drinkable water daily, said an environmental minister.

The amount of waste generated by the construction sector underscores an urgent need for embracing circularity — a sustainable model that aims to minimize waste and maximize material efficiency through recovery and reuse — in the built environment: 600 million tons of construction and demolition waste was produced in the United States alone in 2018, with 820 million tons reported in the European Union, and an excess of 2 billion tons annually in China.

This significant resource loss embedded in our current industrial ecosystem marks a linear economy that operates on a “take-make-dispose” model of construction; in contrast, the “make-use-reuse” approach of a circular economy offers an important opportunity to reduce environmental impacts.

A team of MIT researchers has begun to assess what may be needed to spur widespread circular transition within the built environment in a new open-access study that aims to understand stakeholders’ current perceptions of circularity and quantify their willingness to pay.

“This paper acts as an initial endeavor into understanding what the industry may be motivated by, and how integration of stakeholder motivations could lead to greater adoption,” says lead author Juliana Berglund-Brown, PhD student in the Department of Architecture at MIT.

Considering stakeholders’ perceptions

Three different stakeholder groups from North America, Europe, and Asia — material suppliers, design and construction teams, and real estate developers — were surveyed by the research team that also comprises Akrisht Pandey ’23; Fabio Duarte, associate director of the MIT Senseable City Lab; Raquel Ganitsky, fellow in the Sustainable Real Estate Development Action Program; Randolph Kirchain, co-director of MIT Concrete Sustainability Hub; and Siqi Zheng, the STL Champion Professor of Urban and Real Estate Sustainability at Department of Urban Studies and Planning.

Despite growing awareness of reuse practice among construction industry stakeholders, circular practices have yet to be implemented at scale — attributable to many factors that influence the intersection of construction needs with government regulations and the economic interests of real estate developers.

The study notes that perceived barriers to circular adoption differ based on industry role, with lack of both client interest and standardized structural assessment methods identified as the primary concern of design and construction teams, while the largest deterrents for material suppliers are logistics complexity, and supply uncertainty. Real estate developers, on the other hand, are chiefly concerned with higher costs and structural assessment. 

Yet encouragingly, respondents expressed willingness to absorb higher costs, with developers indicating readiness to pay an average of 9.6 percent higher construction costs for a minimum 52.9 percent reduction in embodied carbon — and all stakeholders highly favor the potential of incentives like tax exemptions to aid with cost premiums.

Next steps to encourage circularity

The findings highlight the need for further conversation between design teams and developers, as well as for additional exploration into potential solutions to practical challenges. “The thing about circularity is that there is opportunity for a lot of value creation, and subsequently profit,” says Berglund-Brown. “If people are motivated by cost, let’s provide a cost incentive, or establish strategies that have one.”

When it comes to motivating reasons to adopt circularity practices, the study also found trends emerging by industry role. Future net-zero goals influence developers as well as design and construction teams, with government regulation the third-most frequently named reason across all respondent types.

“The construction industry needs a market driver to embrace circularity,” says Berglund-Brown, “Be it carrots or sticks, stakeholders require incentives for adoption.”

The effect of policy to motivate change cannot be understated, with major strides being made in low operational carbon building design after policy restricting emissions was introduced, such as Local Law 97 in New York City and the Building Emissions Reduction and Disclosure Ordinance in Boston. These pieces of policy, and their results, can serve as models for embodied carbon reduction policy elsewhere.

Berglund-Brown suggests that municipalities might initiate ordinances requiring buildings to be deconstructed, which would allow components to be reused, curbing demolition methods that result in waste rather than salvage. Top-down ordinances could be one way to trigger a supply chain shift toward reprocessing building materials that are typically deemed “end-of-life.”

The study also identifies other challenges to the implementation of circularity at scale, including risk associated with how to reuse materials in new buildings, and disrupting status quo design practices.

“Understanding the best way to motivate transition despite uncertainty is where our work comes in,” says Berglund-Brown. “Beyond that, researchers can continue to do a lot to alleviate risk — like developing standards for reuse.”

Innovations that challenge the status quo

Disrupting the status quo is not unusual for MIT researchers; other visionary work in construction circularity pioneered at MIT includes “a smart kit of parts” called Pixelframe. This system for modular concrete reuse allows building elements to be disassembled and rebuilt several times, aiding deconstruction and reuse while maintaining material efficiency and versatility.

Developed by MIT Climate and Sustainability Consortium Associate Director Caitlin Mueller’s research team, Pixelframe is designed to accommodate a wide range of applications from housing to warehouses, with each piece of interlocking precast concrete modules, called Pixels, assigned a material passport to enable tracking through its many life cycles.

Mueller’s work demonstrates that circularity can work technically and logistically at the scale of the built environment — by designing specifically for disassembly, configuration, versatility, and upfront carbon and cost efficiency.

“This can be built today. This is building code-compliant today,” said Mueller of Pixelframe in a keynote speech at the recent MCSC Annual Symposium, which saw industry representatives and members of the MIT community coming together to discuss scalable solutions to climate and sustainability problems. “We currently have the potential for high-impact carbon reduction as a compelling alternative to the business-as-usual construction methods we are used to.”

Pixelframe was recently awarded a grant by the Massachusetts Clean Energy Center (MassCEC) to pursue commercialization, an important next step toward integrating innovations like this into a circular economy in practice. “It’s MassCEC’s job to make sure that these climate leaders have the resources they need to turn their technologies into successful businesses that make a difference around the world,” said MassCEC CEO Emily Reichart, in a press release.

Additional support for circular innovation has emerged thanks to a historic piece of climate legislation from the Biden administration. The Environmental Protection Agency recently awarded a federal grant on the topic of advancing steel reuse to Berglund-Brown — whose PhD thesis focuses on scaling the reuse of structural heavy-section steel — and John Ochsendorf, the Class of 1942 Professor of Civil and Environmental Engineering and Architecture at MIT.

“There is a lot of exciting upcoming work on this topic,” says Berglund-Brown. “To any practitioners reading this who are interested in getting involved — please reach out.”

The study is supported in part by the MIT Climate and Sustainability Consortium.

MIT-affiliated winners of the 2024 Nobel Prizes were celebrated in Stockholm, Sweden, as part of Nobel Week, which culminated with a grand Nobel ceremony on Dec. 10.

This year’s laureates with MIT ties include Daron Acemoglu, an Institute Professor, and Simon Johnson, the Ronald A. Kurtz Professor of Entrepreneurship, who together shared the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, along with James Robinson of the University of Chicago, for their work on the relationship between economic growth and political institutions. MIT Department of Biology alumnus Victor Ambros ’75, PhD ’79 also shared the Nobel Prize in Physiology or Medicine with Gary Ruvkun, who completed his postdoctoral research at the Institute alongside Ambros in the 1980s. The two were honored for their discovery of MicroRNA.

The honorees and their invited guests took part in a number of activities in Stockholm during this year’s Nobel Week, which began Dec. 5 with press conferences and a tour of special Nobel Week Lights around the city. Lectures, a visit to the Nobel Prize Museum, and a concert followed.

Per tradition, the winners received their medals from King Carl XVI Gustaf of Sweden on Dec. 10, the anniversary of the death of Alfred Nobel. (Winners of the Nobel Peace Prize were honored on the same day in Oslo, Norway.)

At least 105 MIT affiliates — including faculty, staff, alumni, and others — have won Nobel Prizes, according to MIT Institutional Research. Photos from the festivities appear below.

Metabolic imaging is a noninvasive method that enables clinicians and scientists to study living cells using laser light, which can help them assess disease progression and treatment responses.

But light scatters when it shines into biological tissue, limiting how deep it can penetrate and hampering the resolution of captured images.

Now, MIT researchers have developed a new technique that more than doubles the usual depth limit of metabolic imaging. Their method also boosts imaging speeds, yielding richer and more detailed images.

This new technique does not require tissue to be preprocessed, such as by cutting it or staining it with dyes. Instead, a specialized laser illuminates deep into the tissue, causing certain intrinsic molecules within the cells and tissues to emit light. This eliminates the need to alter the tissue, providing a more natural and accurate representation of its structure and function.

The researchers achieved this by adaptively customizing the laser light for deep tissues. Using a recently developed fiber shaper — a device they control by bending it — they can tune the color and pulses of light to minimize scattering and maximize the signal as the light travels deeper into the tissue. This allows them to see much further into living tissue and capture clearer images.

Greater penetration depth, faster speeds, and higher resolution make this method particularly well-suited for demanding imaging applications like cancer research, tissue engineering, drug discovery, and the study of immune responses.

“This work shows a significant improvement in terms of depth penetration for label-free metabolic imaging. It opens new avenues for studying and exploring metabolic dynamics deep in living biosystems,” says Sixian You, assistant professor in the Department of Electrical Engineering and Computer Science (EECS), a member of the Research Laboratory for Electronics, and senior author of a paper on this imaging technique.

She is joined on the paper by lead author Kunzan Liu, an EECS graduate student; Tong Qiu, an MIT postdoc; Honghao Cao, an EECS graduate student; Fan Wang, professor of brain and cognitive sciences; Roger Kamm, the Cecil and Ida Green Distinguished Professor of Biological and Mechanical Engineering; Linda Griffith, the School of Engineering Professor of Teaching Innovation in the Department of Biological Engineering; and other MIT colleagues. The research appears today in Science Advances.

Laser-focused

This new method falls in the category of label-free imaging, which means tissue is not stained beforehand. Staining creates contrast that helps a clinical biologist see cell nuclei and proteins better. But staining typically requires the biologist to section and slice the sample, a process that often kills the tissue and makes it impossible to study dynamic processes in living cells.

In label-free imaging techniques, researchers use lasers to illuminate specific molecules within cells, causing them to emit light of different colors that reveal various molecular contents and cellular structures. However, generating the ideal laser light with certain wavelengths and high-quality pulses for deep-tissue imaging has been challenging.

The researchers developed a new approach to overcome this limitation. They use a multimode fiber, a type of optical fiber which can carry a significant amount of power, and couple it with a compact device called a “fiber shaper.” This shaper allows them to precisely modulate the light propagation by adaptively changing the shape of the fiber. Bending the fiber changes the color and intensity of the laser.

Building on prior work, the researchers adapted the first version of the fiber shaper for deeper multimodal metabolic imaging.

“We want to channel all this energy into the colors we need with the pulse properties we require. This gives us higher generation efficiency and a clearer image, even deep within tissues,” says Cao.

Once they had built the controllable mechanism, they developed an imaging platform to leverage the powerful laser source to generate longer wavelengths of light, which are crucial for deeper penetration into biological tissues.

“We believe this technology has the potential to significantly advance biological research. By making it affordable and accessible to biology labs, we hope to empower scientists with a powerful tool for discovery,” Liu says.

Dynamic applications

When the researchers tested their imaging device, the light was able to penetrate more than 700 micrometers into a biological sample, whereas the best prior techniques could only reach about 200 micrometers.

“With this new type of deep imaging, we want to look at biological samples and see something we have never seen before,” Liu adds.

The deep imaging technique enabled them to see cells at multiple levels within a living system, which could help researchers study metabolic changes that happen at different depths. In addition, the faster imaging speed allows them to gather more detailed information on how a cell’s metabolism affects the speed and direction of its movements.

This new imaging method could offer a boost to the study of organoids, which are engineered cells that can grow to mimic the structure and function of organs. Researchers in the Kamm and Griffith labs pioneer the development of brain and endometrial organoids that can grow like organs for disease and treatment assessment.

However, it has been challenging to precisely observe internal developments without cutting or staining the tissue, which kills the sample.

This new imaging technique allows researchers to noninvasively monitor the metabolic states inside a living organoid while it continues to grow.

With these and other biomedical applications in mind, the researchers plan to aim for even higher-resolution images. At the same time, they are working to create low-noise laser sources, which could enable deeper imaging with less light dosage.

They are also developing algorithms that react to the images to reconstruct the full 3D structures of biological samples in high resolution.

In the long run, they hope to apply this technique in the real world to help biologists monitor drug response in real-time to aid in the development of new medicines.

“By enabling multimodal metabolic imaging that reaches deeper into tissues, we’re providing scientists with an unprecedented ability to observe nontransparent biological systems in their natural state. We’re excited to collaborate with clinicians, biologists, and bioengineers to push the boundaries of this technology and turn these insights into real-world medical breakthroughs,” You says.

“This work is exciting because it uses innovative feedback methods to image cell metabolism deeper in tissues compared to current techniques. These technologies also provide fast imaging speeds, which was used to uncover unique metabolic dynamics of immune cell motility within blood vessels. I expect that these imaging tools will be instrumental for discovering links between cell function and metabolism within dynamic living systems,” says Melissa Skala, an investigator at the Morgridge Institute for Research who was not involved with this work.

“Being able to acquire high resolution multi-photon images relying on NAD(P)H autofluorescence contrast faster and deeper into tissues opens the door to the study of a wide range of important problems,” adds Irene Georgakoudi, a professor of biomedical engineering at Tufts University who was also not involved with this work. “Imaging living tissues as fast as possible whenever you assess metabolic function is always a huge advantage in terms of ensuring the physiological relevance of the data, sampling a meaningful tissue volume, or monitoring fast changes. For applications in cancer diagnosis or in neuroscience, imaging deeper — and faster — enables us to consider a richer set of problems and interactions that haven’t been studied in living tissues before.”

This research is funded, in part, by MIT startup funds, a U.S. National Science Foundation CAREER Award, an MIT Irwin Jacobs and Joan Klein Presidential Fellowship, and an MIT Kailath Fellowship.

The Brazilian Supreme Court is on the verge of deciding whether digital platforms can be held liable for third-party content even without a judicial order requiring removal. A panel of eleven justices is examining two cases jointly, and one of them directly challenges whether Brazil’s internet intermediary liability regime for user-generated content aligns with the country’s Federal Constitution or fails to meet constitutional standards. The outcome of these cases can seriously undermine important free expression and privacy safeguards if they lead to general content monitoring obligations or broadly expand notice-and-takedown mandates. 

The court’s examination revolves around Article 19 of Brazil’s Civil Rights Framework for the Internet (“Marco Civil da Internet”, Law n. 12.965/2014). The provision establishes that an internet application provider can only be held liable for third-party content if it fails to comply with a judicial order to remove the content. A notice-and-takedown exception to the provision applies in cases of copyright infringement, unauthorized disclosure of private images containing nudity or sexual activity, and content involving child sexual abuse. The first two exceptions are in Marco Civil, while the third one comes from a prior rule included in the Brazilian child protection law.

The decision the court takes will set a precedent for lower courts regarding two main topics: whether Marco Civil’s internet intermediary liability regime is aligned with Brazil's Constitution and whether internet application providers have the obligation to monitor online content they host and remove it when deemed offensive, without judicial intervention. Moreover, it can have a regional and cross-regional impact as lawmakers and courts look across borders at platform regulation trends amid global coordination initiatives.

After a public hearing held last year, the Court's sessions about the cases started in late November and, so far, only Justice Dias Toffoli, who is in charge of Marco Civil’s constitutionality case, has concluded the presentation of his vote. The justice declared Article 19 unconstitutional and established the notice-and-takedown regime set in Article 21 of Marco Civil, which relates to unauthorized disclosure of private images, as the general rule for intermediary liability. According to his vote, the determination of liability must consider the activities the internet application provider has actually carried out and the degree of interference of these activities.

However, platforms could be held liable for certain content regardless of notification, leading to a monitoring duty. Examples include content considered criminal offenses, such as crimes against the democratic state, human trafficking, terrorism, racism, and violence against children and women. It also includes the publication of notoriously false or severely miscontextualized facts that lead to violence or have the potential to disrupt the electoral process. If there’s reasonable doubt, the notice-and-takedown rule under Marco Civil’s Article 21 would be the applicable regime.

The court session resumes today, but it’s still uncertain whether all eleven justices will reach a judgement by year’s end.  

Some Background About Marco Civil’s Intermediary Liability Regime

The legislative intent back in 2014 to establish Article 19 as the general rule for internet application providers' liability for user-generated content reflected civil society’s concerns over platform censorship. Faced with the risk of being held liable for user content, internet platforms generally prioritize their economic interests and security over preserving users’ protected expression and over-remove content to avoid legal battles and regulatory scrutiny. The enforcement overreach of copyright rules online was already a problem when the legislative discussion of Marco Civil took place. Lawmakers chose to rely on courts to balance the different rights at stake in removing or keeping user content online. The approval of Marco Civil had wide societal support and was considered a win for advancing users’ rights online.

The provision was in line with the Special Rapporteurs for Freedom of Expression from the United Nations and the Inter-American Commission on Human Rights (IACHR). In that regard, the then IACHR’s Special Rapporteur had clearly remarked that a strict liability regime creates strong incentives for private censorship, and would run against the State’s duty to favor an institutional framework that protects and guarantees free expression under the American Convention on Human Rights. Notice-and-takedown regimes as the general rule also raised concerns of over-removal and the weaponization of notification mechanisms to censor protected speech.

A lot has happened since 2014. Big Tech platforms have consolidated their dominance, the internet ecosystem is more centralized, and algorithmic mediation of content distribution online has intensified, increasingly relying on a corporate surveillance structure. Nonetheless, the concerns Marco Civil reflects remain relevant just as the balance its intermediary liability rule has struck persists as a proper way of tackling these concerns. Regarding current challenges, changes to the liability regime suggested in Dias Toffoli's vote will likely reinforce rather than reduce corporate surveillance, Big Tech’s predominance, and digital platforms’ power over online speech.

The Cases Under Trial and The Reach of the Supreme Court’s Decision

The two individual cases under analysis by the Supreme Court are more than a decade old. Both relate to the right to honor. In the first one, the plaintiff, a high school teacher, sued Google Brasil Internet Ltda to remove an online community created by students to offend her on the now defunct Orkut platform. She asked for the deletion of the community and compensation for moral damages, as the platform didn't remove the community after an extrajudicial notification. Google deleted the community following the decision of the lower court, but the judicial dispute about the compensation continued.

In the second case, the plaintiff sued Facebook after the company didn’t remove an offensive fake account impersonating her. The lawsuit sought to shut down the fake account, obtain the identification of the account’s IP address, and compensation for moral damages. As Marco Civil had already passed, the judge denied the moral compensation request. Yet, the appeals court found that Facebook could be liable for not removing the fake account after an extrajudicial notification, finding Marco Civil’s intermediary liability regime unconstitutional vis-à-vis Brazil’s constitutional protection to consumers. 

Both cases went all the way through the Supreme Court in two separate extraordinary appeals, now examined jointly. For the Supreme Court to analyze extraordinary appeals, it must identify and approve a “general repercussion” issue that unfolds from the individual case. As such, the topics under analysis of the Brazilian Supreme Court in these appeals are not only the individual cases, but also the court’s understanding about the general repercussion issues involved. What the court stipulates in this regard will orient lower courts’ decisions in similar cases. 

The two general repercussion issues under scrutiny are, then, the constitutionality of Marco Civil’s internet intermediary liability regime and whether internet application providers have the obligation to monitor published content and take it down when considered offensive, without judicial intervention. 

There’s a lot at stake for users’ rights online in the outcomes of these cases. 

The Many Perils and Pitfalls on the Way

Brazil’s platform regulation debate has heated up in the last few years. Concerns over the gigantic power of Big Tech platforms, the negative effects of their attention-driven business model, and revelations of plans and actions from the previous presidential administration to remain in power arbitrarily inflamed discussions of regulating Big Tech. As its main vector, draft bill 2630 (PL 2630), didn’t move forward in the Brazilian Congress, the Supreme Court’s pending cases gained traction as the available alternative for introducing changes. 

We’ve written about intermediary liability trends around the globe, how to move forward, and the risks that changes in safe harbors regimes end up reshaping intermediaries’ behavior in ways that ultimately harm freedom of expression and other rights for internet users. 

One of these risks is relying on strict liability regimes to moderate user expression online. Holding internet application providers liable for user-generated content regardless of a notification means requiring them to put in place systems of content monitoring and filtering with automated takedowns of potential infringing content. 

While platforms like Facebook, Instagram, X (ex-Twitter), Tik Tok, and YouTube already use AI tools to moderate and curate the sheer volume of content they receive per minute, the resources they have for doing so are not available for other, smaller internet application providers that host users’ expression. Making automated content monitoring a general obligation will likely intensify the concentration of the online ecosystem in just a handful of large platforms. Strict liability regimes also inhibit or even endanger the existence of less-centralized content moderation models, contributing yet again to entrenching Big Tech’s dominance and business model.

But the fact that Big Tech platforms already use AI tools to moderate and restrict content doesn’t mean they do it well. Automated content monitoring is hard at scale and platforms constantly fail at purging content that violates its rules without sweeping up protected content. In addition to historical issues with AI-based detection of copyright infringement that have deeply undermined fair use rules, automated systems often flag and censor crucial information that should stay online.  

Just to give a few examples, during the wave of protests in Chile, internet platforms wrongfully restricted content reporting police's harsh repression of demonstrations, having deemed it violent content. In Brazil, we saw similar concerns when Instagram censored images of Jacarezinho’s community’s massacre in 2021, which was the most lethal police operation in Rio de Janeiro’s history. In other geographies, the quest to restrict extremist content has removed videos documenting human rights violations in conflicts in countries like Syria and Ukraine.

These are all examples of content similar to what could fit into Justice Toffoli’s list of speech subject to a strict liability regime. And while this regime shouldn’t apply in cases of reasonable doubt, platform companies won’t likely risk keeping such content up out of concern that a judge decides later that it wasn’t a reasonable doubt situation and orders them to pay damages.  Digital platforms have, then, a strong incentive to calibrate their AI systems to err on the side of censorship. And depending on how these systems operate, it means a strong incentive for conducting prior censorship potentially affecting protected expression, which defies Article 13 of the American Convention.  

Setting the notice-and-takedown regime as the general rule for an intermediary’s liability also poses risks. While the company has the chance to analyze and decide whether to keep content online, again the incentive is to err on the side of taking it down to avoid legal costs.

Brazil's own experience in courts shows how tricky the issue can be. InternetLab's research based on rulings involving free expression online indicated that Brazilian courts of appeals denied content removal requests in more than 60% of cases. The Brazilian Association of Investigative Journalism (ABRAJI) has also highlighted data showing that at some point in judicial proceedings, judges agreed with content removal requests in around half of the cases, and some were reversed later on. This is especially concerning in honor-related cases. The more influential or powerful the person involved, the higher the chances of arbitrary content removal, flipping the public-interest logic of preserving access to information. We should not forget companies that thrived by offering reputation management services built upon the use of takedown mechanisms to disappear critical content online.

It's important to underline that this ruling comes in the absence of digital procedural justice guarantees. While Justice Toffoli’s vote asserts platforms’ duty to provide specific notification channels, preferably electronic, to receive complaints about infringing content, there are no further specifications to avoid the misuse of notification systems. Article 21 of Marco Civil sets that notices must allow the specific identification of the contested content (generally understood as the URL) and elements to verify that the complainant is the person offended. Except for that, there is no further guidance on which details and justifications the notice should contain, and whether the content’s author would have the opportunity, and the proper mechanism, to respond or appeal to the takedown request. 

As we said before, we should not mix platform accountability with reinforcing digital platforms as points of control over people's online expression and actions. This is a dangerous path considering the power big platforms already have and the increasing intermediation of digital technologies in everything we do. Unfortunately, the Supreme Court seems to be taking a direction that will emphasize such a role and dominant position, creating also additional hurdles for smaller platforms and decentralized models to compete with the current digital giants. 

Surprising no one, it’s easy to trick an LLM-controlled robot into ignoring its safety instructions.

Kennedy has spread misinformation about the deadliest and most debilitating diseases of the modern era.

The justices puzzled over the extent to which agencies can limit the scope of climate and environment reviews for projects like highways and pipelines.

Solicitor General Elizabeth Prelogar said more than two dozen lawsuits from local governments against the oil industry should move forward in state court.

The court ruled that the Interior Department appropriately weighed the environmental impacts of the offshore wind project.

The state’s carbon market is strengthening after voters rejected a measure to abolish it. That could increase gasoline and other prices.

The insurance boss also said nuclear energy is a growth opportunity.

Rising temperatures, increasing precipitation, thawing permafrost and melting ice are pushing the Arctic outside its historical norms.

The California Air Resources Board’s move indicates concerns over the first-in-the-nation measure Gov. Gavin Newsom signed last year.

Of the 28 insurers reviewed, more than half were hit by climate-attributed losses that exceeded the coal, oil and gas premiums they earned, an activist coalition said.

The Integrity Council for the Voluntary Carbon Market last month approved three models for generating credits that two expert-panel members disapproved.

Despite the increase in extreme weather, catastrophe bonds have proved highly resilient. This year, they’re on track to return about 16 percent.