Homo floresiensis, a small-statured human species known as Flores’ human hobbits, became extinct 50,000 years ago due to prolonged drought and climate change.
Scientists extracted ancient air from 1.4-billion-year-old halite crystals. It contained higher atmospheric oxygen and carbon dioxide levels than expected.
When seabirds fledge at an atoll in northwestern Hawaii, tiger sharks move in to prey on the fledgling seabirds, disrupting shark populations in the area.
Scientists thought mosasaurs - giant sea reptiles - lived in oceans. But the discovery of fossils in North Dakota shows they may also have lived in freshwater.
The Audubon Christmas Bird Count, held each winter, is one of the longest-running community science projects. You can help collect important data about birds.
Wisdom, a beloved Laysan Albatross, is the oldest known bird. At 75, she returned (with her mate) to Midway Atoll in November 2025 for another breeding season.
Shireen Gonzaga is a freelance writer who enjoys writing about natural history. She is also a technical editor at an astronomical observatory where she works on documentation for astronomers.