Learn more about why the human population seems to be in decline and what that could mean for the future.

Learn why some icy objects inhabiting a remote region beyond Neptune look like snowmen.

Learn how a simple blood test measuring a key Alzheimer’s protein may help estimate when symptoms are likely to begin, ...

Learn how cats and humans can share key cancer mutations — and why those similarities could guide future treatment research.

Learn more about the impact ultramarathon running has on red blood cells and how it may do more harm than good for the body.

Learn more about the massive avalanche near Lake Tahoe that killed eight skiers and is exposing how snow droughts and climate change are increasing avalanche risk.

Learn how a newly discovered 95-million-year-old Spinosaurus mirabilis used interlocking teeth to catch fish in an ancient ...