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Tag: Oregon State University

  • [Science] Earth’s Climate Indicators Hit Record Extremes in 2026 as Warming Speeds Up

    [Science] Earth’s Climate Indicators Hit Record Extremes in 2026 as Warming Speeds Up

    A new annual climate report finds that seven of Earth’s sixteen tracked climate indicators, including ocean heat, sea level, and ice loss, have reached record extremes in 2026. Just as notable, the authors estimate that the rate of global surface warming has climbed sharply over the past few decades. The findings matter well beyond climate science circles: if the recent pace continues, warming thresholds long treated as distant milestones could arrive within the working lifetime of people reading this, not generations from now.

    The Planet, Checked Like a Patient

    The findings come from “The 2026 State of the Climate Report: Challenges and Opportunities,” published on October 14, 2026 in the peer-reviewed journal BioScience. It is the latest edition of an annual series led by William Ripple, a distinguished professor at Oregon State University’s College of Forestry, and Christopher Wolf of Terrestrial Ecosystems Research Associates, with co-authors including climate scientist Michael Mann of the University of Pennsylvania and Johan Rockström of the Potsdam Institute for Climate Impact Research.

    The authors track sixteen “planetary vital signs” to monitor changes in Earth’s climate system. These include atmospheric greenhouse gas concentrations, global surface temperature, ocean heat content (the total heat stored in ocean water, including far below the surface, not just sea-surface temperature), sea level, and ice loss. Alongside these, they track the human activities behind the changes, such as fossil fuel consumption and the growth of renewable energy. Much as a doctor reads blood pressure or heart rate over time rather than relying on one measurement, the point of this framework is to follow a consistent set of numbers year after year, rather than judging the climate by any single dramatic event.

    Record Extremes and a Faster Warming Rate

    Of the sixteen indicators, seven, or 44 percent, are now at record extremes. Atmospheric carbon dioxide exceeded 428 parts per million (meaning about 428 CO₂ molecules per million molecules of dry air) in May 2026, roughly 50 percent above pre-industrial levels. Methane and nitrous oxide, two other greenhouse gases, also reached record levels based on year-to-date 2026 averages, though as the year is not yet complete, these figures remain provisional.

    The report’s warming-rate estimate is one of its most discussed figures. Using a segmented trend analysis, the authors put the rate of global surface warming at roughly 0.05 degrees Celsius per decade between 1880 and 1970, rising to about 0.19 degrees per decade between 1970 and 2010, and then to about 0.36 degrees per decade between 2010 and 2024. That is roughly seven times the earliest rate, though comparing periods of such different lengths calls for some caution: the most recent interval spans only 14 years, so it is more exposed to short-term swings such as El Niño than the 90-year span at the start of the record. Even allowing for that, the direction, a clearly faster recent pace, is consistent across the three periods. If this recent rate were to persist, the authors warn, warming could pass 2 degrees Celsius above pre-industrial levels before 2050; that is a conditional extrapolation from the observed trend, not a guaranteed forecast, since both natural variability and future policy choices could shift it either way.

    The rate of global surface warming rose from about 0.05°C per decade before 1970 to about 0.36°C per decade since 2010 — roughly seven times faster.
    Bar chart showing global warming rate rising from 0.05 to 0.19 to 0.36 degrees Celsius per decade across three periods
    Source: Ripple et al., BioScience (2026), “The 2026 State of the Climate Report”

    The authors describe several indicators as showing accelerating trends or abrupt shifts that could make some future changes harder to anticipate than the steadier patterns of past decades.

    Oceans and Ice Absorb the Impact

    Much of the planet’s response to rising greenhouse gases plays out beneath the ocean surface rather than in the air people breathe. The report finds ocean heat content and global sea level at record highs, while glacier thickness and the mass of the Greenland ice sheet sit at record lows. Energy-related carbon dioxide emissions, meanwhile, passed 41 gigatons for the first time in 2025.

    The overall trend is clear, although scientists continue to refine how they measure ocean heat uptake region by region. A separate study published this month by researchers at the University of Bonn combined satellite and ocean-float data to estimate how much heat different ocean basins are absorbing. For the Indian Ocean during 2005–2015, the new estimate came in at 0.58 watts per square meter, against 1.09 watts per square meter from a commonly used climate reanalysis dataset, ORAS5, a nearly two-fold gap for that basin and period specifically. Xsciens covered that study in more detail here. The gap does not overturn the broader picture that oceans are absorbing most of Earth’s excess heat; it is a reminder that even well-established indicators like ocean heat content keep being refined as measurement methods improve.

    Glaciers are a visible, land-based counterpart to that underwater story. Switzerland’s glacier monitoring network reported that Swiss glaciers lost roughly 5.5 percent of their ice volume in 2026, the second-largest annual loss on record after 2022, a sign that frozen water reserves relied on for seasonal water supply are shrinking at a pace that leaves less room for error in regional water planning.

    The Human Toll, and How to Read It

    The report documents a series of disasters from the past year that illustrate the human costs of extreme weather. Hurricane Melissa, which struck the Caribbean in October 2025, caused 95 deaths and more than 12 billion dollars in damage. A separate storm in November 2025, combined with monsoon flooding in Indonesia, killed 708 people. A June 2026 heatwave across Europe is associated, in a preliminary statistical estimate, with around 14,000 excess deaths, meaning deaths above the number that would normally be expected, calculated from mortality data and a model rather than counted individually; the figure is not yet finalized and could be revised.

    The report’s authors write that these events “were at least partly attributable to climate change,” a deliberately qualified statement: it does not claim that any single storm or heatwave would have been impossible without global warming, but that warming is believed to have raised the odds or intensity of each one to some degree. That is consistent with how formal event-attribution science generally works, comparing the likelihood of an event in today’s warmer climate against a hypothetical world without human-caused warming, rather than issuing a simple yes-or-no verdict.

    Beyond individual disasters, the authors flag rising risk around climate “tipping points”: thresholds beyond which feedbacks could drive changes that become difficult, or in some cases effectively impossible, to reverse on human timescales. Two examples they highlight are a weakening of the Atlantic Meridional Overturning Circulation, the ocean current system that helps regulate temperatures across the North Atlantic region, and the risk of large-scale Amazon rainforest dieback, which the report suggests could be triggered by the combined effects of warming and deforestation at as little as 1.5 to 1.9 degrees Celsius of warming. The authors describe continued warming and interacting feedbacks as raising the risk of a self-reinforcing “hothouse” trajectory, marked by weakening natural carbon sinks and accelerating ice loss, though they present this as an elevated risk worth monitoring closely, not an outcome they predict is imminent.

    A Mixed Picture on Energy

    The report is not uniformly bleak. Low-carbon energy sources collectively supplied about 43 percent of global electricity in 2025, and solar and wind consumption grew by roughly 18 percent over the previous year. For the first time in more than a century, renewable energy sources globally surpassed coal as an electricity source. Battery storage, which helps make intermittent solar and wind power more usable around the clock, is also expanding quickly.

    Yet the authors are blunt that this progress remains far short of what is needed. Global fossil fuel consumption still rose by 0.9 percent in 2025, because rising overall energy demand has outpaced the growth of clean alternatives rather than being displaced by them. On adaptation, the gap is starker still: the report cites roughly 64 billion dollars in international public adaptation finance reaching developing countries in 2024, against an estimated need of 310 to 365 billion dollars per year by 2035.

    What the Report Recommends

    The authors call for pursuing rapid cuts to greenhouse gas emissions alongside faster investment in adaptation and resilience, rather than treating the two as separate tracks. They point to measures such as mangrove and wetland restoration, which both protect coastlines and store carbon, early warning systems for extreme weather, and a stronger emphasis on climate justice so that adaptation funding reaches local and frontline communities rather than only large infrastructure projects. They also point to interactive public tools, such as the En-ROADS climate simulator and the Drawdown Explorer, for evaluating the trade-offs between different policy choices.

    The report does not predict inevitable catastrophe. It documents a climate system under increasing, and in some respects accelerating, pressure, while pointing to specific areas where policy and technology can still change the trajectory. Its underlying message is less a single verdict than a status update: of sixteen vital signs checked in 2026, seven are flashing red, the pace of change is quickening, and the choices made over the next few years will help determine how many more join them.

    Sources: American Institute of Biological Sciences / EurekAlert, Ripple et al., “The 2026 State of the Climate Report,” BioScience (2026), University of Bonn, GPB/NPR on Swiss glacier loss

  • [Science] A Sulfur Crystal Turns Sunlight Into Hydrogen — A Step Toward Cheaper Fuel

    [Science] A Sulfur Crystal Turns Sunlight Into Hydrogen — A Step Toward Cheaper Fuel

    Chemists at Oregon State University have built a new crystalline material that uses sunlight to produce hydrogen from water, without bolting on a separate, expensive metal catalyst to make the reaction run. The work, published in the Journal of the American Chemical Society, does not come with a price tag or a factory timeline yet, but it offers a concrete lead on one of clean hydrogen’s biggest obstacles: catalysts that are too costly to use at the scale the energy system would need.

    Illustration of sunlight striking a crystal submerged in water, releasing hydrogen bubbles

    Hydrogen is widely discussed as a fuel for ships, heavy trucks, steelmaking, and chemical plants that are hard to run on batteries alone, since it can generate electricity in a fuel cell with water as the main byproduct. The catch is how the hydrogen gets made. Today, hydrogen production is dominated by fossil fuels, mostly natural gas processed through a method called steam-methane reforming, with coal gasification also contributing a significant share, particularly in parts of Asia. That hydrogen is relatively cheap, on the order of $1.50 per kilogram by Oregon State’s figures, but it releases carbon dioxide in the process, which undercuts much of the climate case for switching to hydrogen in the first place.

    Hydrogen made by splitting water with renewable electricity or sunlight, often called green hydrogen, avoids that emissions problem, but it typically costs around $5 per kilogram today by the same estimate, more than three times as much. These are illustrative, broad figures rather than fixed prices; actual costs swing with local energy prices, plant scale, and technology. Still, part of the gap comes down to hardware: some electrolyzers and photocatalytic systems rely on precious-metal catalysts, platinum among them, to drive the reaction fast enough to be practical, and those materials are not cheap.

    Catching Light With Sulfur, Not Metal

    The Oregon State team, led by chemist Kyriakos Stylianou of the university’s Materials Discovery Laboratory, built a metal-organic framework, a class of crystalline, extremely porous materials assembled from metal ions linked together by organic molecules, that they call BVR-19. It forms spontaneously in water at room temperature, a synthesis route the researchers say avoids the high heat or pressure many materials need, though how that translates into a final production cost has not been established.

    The structural feature that matters most sits inside BVR-19’s organic linkers: a bond between two sulfur atoms that briefly breaks apart when struck by light, generating short-lived, highly reactive sulfur species. According to Oregon State’s announcement, it is these organic, sulfur-containing building blocks that help capture light energy and move electrons to where hydrogen is ultimately produced, working alongside the framework’s metal centers rather than leaving the metal to do that job alone.

    Cost comparison of grey and green hydrogen production, per kilogram in USD
    Source: approximate figures cited alongside Oregon State University’s announcement

    Metal-organic frameworks have drawn growing interest across chemistry over the past two decades because they are so tunable: change the metal, change the organic linker, and the pore size, surface area, and chemical behavior of the resulting crystal can shift dramatically, all within the same basic scaffold. That tunability is also what let the Oregon State team probe BVR-19’s inner workings, discussed next.

    Skipping the Bolted-On Metal Catalyst

    Photocatalytic water splitting conventionally needs more than a light-absorbing material: it usually also requires a separate metal co-catalyst, often platinum, physically attached to the structure to help the hydrogen-forming step run efficiently. Oregon State’s announcement describes BVR-19 as needing no additional expensive metal catalyst for that job, since its organic sulfur chemistry already contributes much of the light capture and electron transfer that a bolted-on catalyst would otherwise be doing.

    That should not be read as “metal-free.” BVR-19 still contains a metal center as part of its crystalline framework, and the team found that changing which metal sits there measurably changed how well the material performed, meaning the metal is far from irrelevant to the chemistry. The real, narrower claim is that no extra, separately added metal catalyst has to be layered on top of the base material the way platinum often is in other systems. It is a distinction worth keeping straight, because the innovation here is removing an added manufacturing step and its cost, not removing metal chemistry from the picture entirely.

    From One Experiment to Design Rules

    To understand why some versions of the framework outperformed others, the team systematically swapped out the metal ion at BVR-19’s core while leaving the rest of the structure essentially unchanged, then compared how each version performed under light. That side-by-side comparison let them connect differences in hydrogen output to specific changes in the material’s electronic structure, giving them a mechanistic explanation for why certain versions work better rather than only an empirical ranking of which ones do.

    “Our work provides a blueprint for designing better materials that can bring down the cost of green hydrogen,” Stylianou said in the university’s announcement of the findings. The team frames the result as a design principle to test and build on in future materials, rather than a finished, optimized catalyst.

    Research groups elsewhere are taking a similar mechanism-first approach to other energy-relevant reactions. A Kyoto University-led team, for instance, recently worked out in detail why a molybdenum molecular catalyst can convert nitrogen from the air into ammonia under comparatively mild laboratory conditions. In both cases, the advance was not a brand-new chemical but a clearer picture of why an existing catalyst behaves the way it does, which is usually what lets chemists improve a material on purpose instead of by trial and error.

    What Cheaper Hydrogen Could Unlock

    None of this means cheap, catalyst-light green hydrogen is imminent. Oregon State’s announcement and the peer-reviewed paper describe a laboratory-scale material and a design principle, not a measured hydrogen production rate, an efficiency figure, or a path to manufacturing; those numbers were not disclosed publicly alongside the findings. The work has not been tested at anything resembling industrial scale, and getting from a promising crystal in a lab to a working photocatalytic reactor typically requires years of further development, stability testing, and engineering, assuming it clears each step at all.

    What the study adds is a mechanistic foothold: evidence that letting an organic, sulfur-based structure share the light-absorbing and electron-transfer work can reduce a material’s dependence on costly bolted-on metal catalysts, at least in this framework, plus a method for figuring out which structural tweaks help and which do not. Whether that translates into cheaper hydrogen depends on factors the current study does not address, including the material’s hydrogen production rate, its durability over repeated use, and the cost of the reactor system built around it. If those later steps go well, incremental advances like this one, chipping away at the cost of individual components rather than reinventing hydrogen production overnight, are generally how energy technologies get cheaper over time. That is also what would let industries that are hard to electrify, such as steelmaking, shipping, and heavy trucking, lean more on low-carbon hydrogen instead of the fossil-derived hydrogen most of them use today.

    The project was funded by the Murdock Charitable Trust, the National Science Foundation, and Oregon State’s College of Science. For now, the result lives in a peer-reviewed paper and a university announcement, with the follow-up work, refining BVR-19, measuring its efficiency, and testing its durability, still ahead.

    Sources: Oregon State University, Journal of the American Chemical Society (DOI), ScienceDaily, Interesting Engineering