Dark boreal forests of Canada absorb enough heat to cancel up to a fifth of their climate benefit, scientists warn
Reports and Proceedings
Updates every hour. Last Updated: 20-Oct-2026 10:16 ET (20-Oct-2026 14:16 GMT/UTC)
Dense evergreen forests in Canada’s snow-covered boreal regions can absorb enough sunlight to offset 6 to 20 percent of their reported carbon benefit, according to a new publication by the UN University. Researchers warn that Canada’s carbon accounting largely overlooks this warming effect, potentially overstating the climate value of reforestation and carbon credits. They call for a new Net Cooling Standard that accounts for surface reflectivity, wildfire risk and long-term carbon storage, while prioritizing mixed-species forests that deliver more durable climate cooling.
As climate impacts are intensifying worldwide, there is an urgent demand for information on how to respond. IIASA researchers and partners have developed a new tool that meets that need, integrating climate drivers, risks, and adaptation options in one framework grounded in IPCC science. It turns authoritative global climate assessments into guidance practitioners can use.
People rarely think about culverts until they are gone. These plain pipes and boxes carry roads over streams and span less than 20 feet -- the federal cutoff for what counts as a bridge. That means road-stream crossings stay out of the National Bridge Inventory and therefore, off the inspection schedule. Yet, when Tropical Storm Irene tore through New England in 2011, it destroyed more than 960 of them in Vermont's Green Mountains alone and left 13 communities entirely cut off for days.
Researchers have shown for the first time that a fibre-optic cable laid on the glacier’s surface can detect hidden cracks with high precision.
About 8 percent of the ice in the crevasse field investigated comprises ice- and air-filled fractures and crevasses, with 92 percent remaining intact.
A single fibre-optic cable provides hundreds of measurement points simultaneously and can be laidfacross crevasse fields more quickly and safely than conventional measuring equipment.
Kyoto, Japan -- Massive storms like the 2005 Hurricane Katrina, that cause over $100 billion in damage, were once considered once-in-a-lifetime events. Increasingly, however, they are becoming the norm: a direct result of climate change, which has made large storms more frequent, intense, and slower-moving, deepening their impact.
Hurricanes can damage homes through flooding and strong winds, and insurance claims target both. After the 2022 Hurricane Ian, for example, 44 percent of insurance claims were for flooding and 56 percent were for wind damage. Yet most economic research focuses on flooding because elevation data and hydrological models can predict flood extent, whereas identifying the location and severity of wind damage across a wide area has posed a particular challenge.
Unlike flooding, there is nothing like a dam or levee that can shield an entire community from wind, so the responsibility falls almost entirely on individual homeowners. To mitigate wind damage, Florida enacted the 2001 Florida Building Code -- 2001 FBC -- which required new and re-roofed homes to use stronger roof-to-wall connections, thicker roof decking, and even impact-resistant windows and doors in some areas. Many homeowners had to spend thousands of dollars to reinforce a roof or install impact-resistant features, yet whether these preventative measures proved to be worth the average cost of about $4,930 had remained unclear.