The saguaro cactus has evolved to endure dry days and high temperatures, but even this resilient plant struggles to cope with the effects of climate change.

This plant’s animal-like behavior and alleged love-provoking abilities have sparked the imagination of everyone from early modern yogis to today’s scientists.

The recent series of hurricanes has demonstrated, climate change is no longer a nebulous futuristic menace, but an existential threat.

Scientists explore the causes--climate change, habitat destruction, and more--that decimated animals and humans alike, from Ice Age to Internet Age.