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Scientists have cracked open the "black box" of feline cancer in a landmark study that genetically analyzed nearly 500 cat tumors from around the world. The research uncovered striking similarities between cancers in cats, dogs, and humans -- ...

Scientists have uncovered the oldest known hand-held wooden tools ever used by humans -- and they're an astonishing 430,000 years old. Buried for hundreds of thousands of years at an ancient lakeside site in Greece, the carefully carved wooden ...

A surprising study suggests vitamin D2 supplements may reduce the body's levels of vitamin D3 -- the more effective form of vitamin D. Researchers found D3 not only boosts vitamin D status more efficiently, but may also play a unique role in helping ...

A colossal new sea predator named Tylosaurus rex has been identified from fossils found in Texas, revealing a brutal 43-foot-long hunter that ruled ancient oceans 80 million years ago. The discovery not only introduces one of the biggest mosasaurs .. ...

Scientists in Germany have demonstrated a startling new form of surveillance: identifying people using nothing more than ordinary WiFi signals. By analyzing how radio waves bounce around a room, researchers can effectively "see" and recognize ...

What if wormholes were never cosmic tunnels at all? New research suggests Einstein and Rosen's famous "bridge" may actually reveal something even stranger: time itself could flow in two directions at once. Instead of connecting distant places in ...

A hidden crater in South Korea may hold clues to one of the biggest turning points in Earth's history: the rise of oxygen. Scientists discovered fossil-like stromatolites -- layered structures built by ancient microbes -- inside the Hapcheon impact . ...

Scientists are uncovering a surprising truth about aging cells: some may damage the body, while others help protect it. The discovery is fueling a new wave of precision anti-aging therapies aimed at removing only the harmful "zombie" cells without .. ...

A new theory suggests many age-related diseases may actually start decades before symptoms appear. Researchers say early-life damage -- from infections, injuries, or genetic mutations -- can remain hidden until aging weakens the body's ability to ...

Reptiles have been growing armor in their skin on and off for hundreds of millions of years, but scientists never fully understood how it evolved. A massive new evolutionary study shows these skin bones appeared independently in multiple lizard ...