Elephants gathered at a watering hole in the relative safety of Serengeti National Park. In unprotected areas with dense human populations, the animals showed higher stress hormone levels.
A choreographer expresses the contemporary paradox of being a woman, Muslim, North African, Arab, and artist.
Multiple theories for the decline of Easter Island's civilization may be complementary.
Hover fly cuticles are covered in tiny spikes called nanopillars.
Conservation efforts have increased China's tree cover.