Department of Paleontology staff members Tom Deméré and Kesler Randall measure the length of the tusk discovered at the 16th and Market project site.
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.