A picturesque Guatemalan lake is now struggling with cyanobacteria blooms.
Why are the Congo's fish evolving so quickly?
If climate change increases El Niño cycles, some primates may sink further into decline.
Even isolated colonies of Pacific albatrosses can eat a stomach-full of plastic trash.
People with Williams Syndrome are fearlessly, impulsively social. Brain scans are revealing why.
When ocean waters heat up, outbreaks of coral bleaching and disease can follow.
Ardipithecus ramidus lived long before Lucy—and moved in quite a different way.
Tyrannosaurus rex is no longer the poster boy for this family of dinosaurs.
Huge genetic studies are making sense of human ancestry across the globe.
The world's most diverse tigers live in India, making it a new hotspot for tiger conservation.