An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in December.

In a suspected case of reverse evolution, wild tomatoes in the Galápagos have developed a defense mechanism that hasn’t been seen in millions of years.

Six species of North American bats glow under ultraviolet lighting, according to a new study. Researchers don’t know why certain mammals exhibit this odd trait.

Two recently examined fossils suggest that Australia’s First Peoples valued big animals for their fossils as well as for their meat, according to a new study.

Researchers say they have uncovered a case of mistaken identity and found evidence of a species called Nanotyrannus lancensis.

Two teams are set to explore dramatically different theories about what happened to Amelia Earhart. Each believes it’s closing in on the answer.

The space agency has been grappling with budget uncertainties and a talent exodus even before the shutdown. But NASA’s moon ...

The search for a famed polar exploration shipwreck led researchers to discover geometric patterns created by fish on the Antarctic seafloor.

Kate Adamala started work on a cell in which the natural molecular structure is reversed. Then a possible doomsday scenario became clear.

The rare bird, spotted in a backyard in Texas, is the first known blue jay-green jay hybrid in the wild, according to a new ...

Researchers uncover two previously undetected bacteria in teeth from Napoleon’s soldiers, revealing a possible combination of illness that ravaged his army in 1812.