More mammals were living on the ground several million years before the mass extinction event that wiped out the dinosaurs, ...

From the southwestern U.S. to Minnesota, Iowa and even parts of New Jersey, it seemed that winter never materialized.

State of the Birds report found one-third of U.S. bird species are facing low population levels, declining trends or other ...

How much they weigh: From as little as 60 pounds (27 kilograms) to more than 1,700 pounds (771 kg) ...

In alpha-gal syndrome, the immune system overreacts to a sugar known as galactose-α-1,3-galactose, or "alpha-gal" for short.

In a study published in Systematic Biology, researchers from Imperial College London, UCL, Dalhousie University and the ...

Quotable quotes are great to use, but you might want to check on who said what exactly. You may be surprised when you do.

Homo sapiens may have evolved good distance-running abilities, but Neanderthals were probably stronger and faster over short ...

A recent report assessing the health of U.S. bird populations presents a grim outlook: Birds in the U.S. are declining, and a ...

Many butterflies, bees and moths are fluttering into oblivion. A new report co-authored by a Canadian researcher warns that more than one-fifth of pollinator species it studied in North America are at ...

U.S. Fish and Wildlife Service wants people to eat more invasive species. You can get nutria, wild pigs, carp and northern ...

Scientists must journey to remote islands in the middle of the Bering Sea, braving uncertain conditions, to reach the ...