18% of gray whales that enter San Francisco Bay die there, scientists find
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Updates every hour. Last Updated: 17-Jun-2026 14:16 ET (17-Jun-2026 18:16 GMT/UTC)
A recent study published in National Science Review has revealed that atmospheric oxidation capacity at northern midlatitude regions is approaching a turning point, challenging prior assessments of hydroxyl radical (OH) increases or stability. Over the past 50–60 years, OH levels have remained near peak values. Future sustained reductions in nitrogen oxide (NOx) emissions will lead to a decline in surface OH concentrations across the northern midlatitude regions, implying an increase in the atmospheric lifetime of pollutants and methane. This poses new challenges for regional air pollution control and climate change mitigation.
Europe’s dependence on fossil fuels is not only making the continent economically and politically vulnerable, it also has dramatic consequences for the population’s health. Growing air pollution, heat damage and the climate-related spread of infectious diseases are looming, warns the 2026 Europe Report of the Lancet Countdown on Health and Climate Change, which its co-directors Prof. Dr Joacim Rocklöv (Heidelberg University) and Prof. Dr Cathryn Tonne (Barcelona Institute for Global Health) are about to present to the public. Together with other experts from academia, practice and policy they will discuss the report’s results during a public event at Heidelberg University, comparing the current findings with successful measures for climate action and health protection. The launch event with livestreaming is to take place on 22 April 2026.
Rapid ocean warming is likely to make tropical cyclone rainfall more intense and longer lasting, increasing flood risks in parts of the North Atlantic region.
A new IIASA-led study finds that expanding street green space can reduce urban heat stress in cities worldwide, but even ambitious greening efforts are unlikely to offset a significant share of the additional heat expected under climate change. Instead, the research shows that street greenery should be part of a broader portfolio of urban adaptation measures.
A global study by the University of Basel, Switzerland, reveals a surprising picture: while 42 percent of treelines worldwide are shifting upslope, 25 percent are retreating. This seemingly contradictory trend involves more than just warming. Climate change and human land use are interacting.