Freshwater ecosystems across the world have experienced rapid species declines compared to ecosystems on land or in the ocean. New research shows that small, community-based reserves in Thailand’s Salween River Basin are serving as critical refuges for fish diversity.

Stanford Earth’s 2020 photo contest drew 156 photographs from faculty, students, and staff. The images captured experiences coping with COVID-19, as well as close encounters with nature from activities before the pandemic.

Stanford epidemiologist Stephen Luby discusses surprising results of a recent study on Nipah virus, a disease with no vaccine and a mortality rate of up to 70 percent.

Drawing from studies on human behavior and responses to past epidemics and wildfire smoke, researchers outline recommendations for communicating correct mask use and suggest areas for further research.