Martian Blues: Did Planet’s Size Affect Its Ability To Hold Onto Water?

Kids' Fossilized Handprints May Be Some of the World's Oldest Art

Trove of Unseen Photos Documents Indigenous Culture in 1920s Alaska. New exhibition and book feature more than 100 images captured by Edward Sherriff Curtis for his seminal chronicle of Native American life

Pioneering EEG test could dramatically increase early diagnosis of Alzheimer’s