A new biological rhythm reflects an organism's pace of life.
Urban and rural dwellers express genes differently.
Conservationists reintroduce a native species to its home.
A new study highlights a feedback loop between global warming and a forest insect.
Tracing asthma in Hutterite families has implications for all.
Climate change could bring grave water shortages to the American Southwest.
Scientists have reanalyzed a 6-million-year-old leg bone.
See how human activity is changing fire patterns around the world.
A new hypothesis of mountain growth challenges plate tectonics.
Satellites show severe deforestation in a rare monarch butterfly overwintering site.