Most Arizonans can name five lakes off the top of their heads, but somehow Patagonia Lake State Park near Nogales remains the aquatic equivalent of that amazing restaurant only locals know about.

Scientists uncover hidden life thriving beneath the surface of the driest desert, revealing how soil ecosystems survive ...

Billions of birds that once filled North American skies have disappeared, and new science shows they are disappearing faster than ever.

Animals of the same species don't always look the same. From birds with different beak shapes to mammals that vary in size or ...

Discover a drive-through wildlife park in Williams, Arizona, offering acres of open habitats and an exciting way to see animals up close.

The desert tortoise, a once-resilient reptile, is a keystone species in the Mojave Desert, where other animals depend for their survival on the burrows it digs. But it is imperiled in California ...

For the first time, whole-genome analysis shows that the small Cape leopards are a genetically distinct population.

Rare skull fossils of Spinosaurus found in the Sahara reveal a new species with a crest and evidence it hunted fish in inland ...

Scientists discovered a new dinosaur species in the Sahara, Spinosaurus mirabilis, that likely hunted fish in shallow rivers.

Deep in the heart of the Sahara, scientists have uncovered Spinosaurus mirabilis — a spectacular new predator crowned with a massive, scimitar-shaped crest that may once have blazed with color under ...

The newest member of the Spinosaurus family measures over 40 feet long. Here is what we know about paleontology's latest discovery.