
ALT A fire salamander (Salamandra salamandra) rests beside a forest stream in Bratsigovo, Bulgaria. Freshwater species face widespread human pressures, but where those pressures affect biodiversity has remained poorly understood. Research mapping 45 threats across 21,490 freshwater species reveals hotspots of impact, helping guide conservation and management efforts where they are most urgently needed. Photo: Guy Edwardes/NPL/Minden Pictures

ALT A flowchart of the Dog Aging Project. It includes graphics of dogs, DNA, and data charts. Part A shows dog graphics with stars indicating enrollment locations. Part B features a chart of dog ages by size. Part C has box plots for types of dogs. Part D displays a graph of methylation changes over years.





























