A woman in Pitumarca, Cuzco Region, Peru, begins weaving a textile on a backstrap loom. She is holding a llama-bone pick, used to help handpick the motifs and to beat (push tight) the weft yarns.
Even at an early evolutionary stage, bird-like dinosaurs occupied different niches in the same ecosystem,
Dung beetles use light from the MIlky Way to find their way
Recently identified subspecies ranges farther than first imagined: across Africa.
An archaeologist ponders the fate of Hoover Dam