climate risk researchers

New analysis indicates the global heatwave season has expanded by roughly 39 days, with extreme heat now arriving earlier in the year and lasting longer than before. Researchers attribute the lengthening season to warming temperatures, warning that prolonged exposure raises health risks and strains infrastructure. Coverage highlights how gradual change can go unnoticed even as extreme heat events become more frequent and severe.

Scientists in Germany are preparing to copy and store vast troves of American climate data, fearing the Trump administration could alter, restrict, or remove federal climate records. The effort has been likened to building an ark, preserving scientific information outside the United States in case it becomes unavailable at home, and has drawn attention as researchers weigh risks to publicly funded datasets.

New reporting from researchers, including work covered by the Natural History Museum and Phys.org, suggests shifting climate conditions could change the risks humans face from deadly rodent-borne diseases. Changes in temperature and rainfall may alter rodent habitats and populations, potentially bringing infected animals into closer contact with people and expanding where diseases like hantavirus and Lassa fever pose a threat.

A new study finds that more than 70% of coastal areas across the United States are subsiding at rates exceeding one millimeter per year. Land sinking compounds the threat of sea-level rise for cities along the Atlantic, Gulf and Pacific coasts, increasing flood risk to infrastructure, homes and wetlands. Researchers say the uneven subsidence means some communities face faster relative sea-level rise than global averages suggest.

PBS NewsHour reports on scientists developing new ways to control mosquito populations as rising global temperatures expand the habitats where the insects and the diseases they carry can spread. The segment examines research approaches to targeting mosquitoes as warming climate conditions push the public health threat into previously unaffected regions.

Astrophysics researchers suggest Earth's magnetic field may reverse, potentially increasing ionizing radiation reaching the equator by around 25%. Charged particles penetrating the weakened field could damage human cells and interfere with atmospheric processes. The claim is circulating widely online, sparking discussion about what a geomagnetic reversal would mean for health, technology and the planet's climate systems.

A systematic overview published in Nature reviews climate actions taken by cities and assesses their effects on public health. The work compiles existing research on measures such as emissions reduction and urban adaptation, aiming to give policymakers a clearer picture of which interventions deliver health benefits. It arrives as city governments face growing pressure to protect residents from heat, air pollution and other climate-related risks.

A US climate technology company has released its satellite-based model as open source, allowing researchers, businesses and insurers to freely access and adapt the underlying technology. The move is expected to widen use of satellite data in climate risk assessment and environmental monitoring, though details on the firm, the model and licensing terms remain limited in early coverage.

Scientists are warning that a Kelvin wave, a large pulse of warm water moving along the equator toward the West Coast, could raise ocean levels along the California coast by as much as a foot. The phenomenon is being linked to developing warm ocean conditions and could worsen coastal erosion and flooding risks, prompting concern among climate and ocean researchers.