Click to open image viewer. Lookdown fish (Selene vomer) an image from “X-ray Vision: Fish Inside Out,” an exhibition from the Smithsonian’s National Museum of Natural History and the Smithsonian ...

A Smithsonian-led team of researchers have discovered North America's oldest known pterosaur, the winged reptiles that lived ...

A single deposit has produced a wealth of fossils revealing the late Triassic ecosystem, where giant amphibians cohabited with newcomers, including turtles and pterosaurs. The 12 million years leading ...

Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of ...

Laurie Rott took these photos of a group of adult turkey vultures she spotted in a neighbor’s oak tree in Golden Hills, when ...

Taking a walk or a little hike out back, down the road, or at park is really good exercise – especially if you do it on a ...

I eye the tree through my spotting scope. Due to the dense foliage, discerning if a raptor nest is in the cottonwood tree is ...

The formerly endangered peregrine falcon produced a bumper crop of at least 23 juveniles this year in the Pittsburgh region.

Adirondack Backcountry Hikers and Hiking the Catskills. Recently, the members of each group have been complaining about black ...

A gay penguin couple have stepped in to hatch and raise a baby chick after it was born at Chester Zoo. Males Scampi and ...

I wrote about a number of unusual bird sightings reported in Yavapai County recently. Since then, there have been two more ...

First Amendment: Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the ...