Nick Paumgarten on saving a species. Plus: the fracturing of conservative Christians; a film-critic legend on the Hollywood ...

Roger Pasquier explains how birds spend the quiet half of their lives even when they're flying and half their brain is awake ...

The study was one of several that assessed the effects of climate change on three species of butterflies whose populations are declining.

Refugees are in extremely vulnerable circumstances, lacking the protection of their own countries and facing immense challenges to their safety and well-being. The 1951 Refugee Convention, ...