An illuminating debut memoir of a woman in science; a moving portrait of a longtime friendship; and a stunningly fresh look at plants that will forever change how you see the natural world.

Some scientific studies predict that as the Earth continues to warm, up to a third of all species could go extinct by the middle of the century. This ABC News program looks at the effect of global warming on non-human life--specifically two species of frogs that used to inhabit the Monteverde Cloud Forest Preserve, in Costa Rica; three additional vanished frog species in Madagascar; and the severely threatened checkerspot butterfly in southern California....