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eDNA metabarcoding uncovers fish biodiversity patterns in heavily damaged mountainous cascade dammed rivers

Researchers used eDNA metabarcoding to study fish biodiversity in heavily damaged mountainous cascade dammed rivers. The study found 97 fish species, including 14 IUCN threatened taxa, with seasonal differences in species detection rates and community composition.

SourceSouth China Botanical Garden, Chinese Academy of Sciences·JournalBiological Diversity·TypeExperimental study·DateAug 19, 2026

Hourly weather data reveals climate trends in U.S.

A new study by NC State University researchers found that areas in the northeastern US have lost nearly 1.5 weeks of temperatures below freezing, while regions like Arizona gained almost 1.5 weeks of temperatures above 86F. This data can help inform climate adaptation planning and justify changes to address regional climate change.

SourceNorth Carolina State University·JournalPLOS Climate·TypeData/statistical analysis·DateNov 12, 2025

Barcelona could suffer heat waves up to 6ºC more intense by the end of the century

A study predicts that Barcelona will experience extreme and dry heat periods with temperature increases of up to 4ºC and a general reduction in relative humidity. The research forecasts an increase in average maximum temperatures of 4ºC and average minimum temperatures of 3.5ºC if greenhouse gas emissions are not drastically reduced.

SourceUniversitat Autonoma de Barcelona·JournalJournal of Geophysical Research Atmospheres·TypeData/statistical analysis·DateJul 17, 2025

Extreme heat linked to increase in mental health emergency care

A nationwide study found that days with higher-than-normal temperatures during the US summer season were associated with increased rates of emergency department visits for any mental health-related condition, particularly substance use and mood disorders. The impact of heat on mental health was similar across age groups and regions, hi...

SourceBoston University School of Medicine·JournalJAMA Psychiatry·TypeCase study·DateFeb 23, 2022

Rising temperatures reshape when and how much people get outdoors on public lands

Rising temperatures are projected to decrease outdoor recreation during summers by 18% over the next 30 years, but increase winter recreation by 12% in mid-century. This shift may lead to a decline in popular winter sports like downhill skiing and an increase in winter mountain biking.

SourceS.J. & Jessie E. Quinney College of Natural Resources, Utah State University·JournalGlobal Environmental Change·TypeData/statistical analysis·DateSep 15, 2021