Explore 25 Earth locations that look like another planet! Discover bizarre landscapes, from Martian deserts to icy moons, ...

However, dwindling species can be saved, the International Union for Conservation of Nature (IUCN), which produces the red ...

Newly endangered animals include desert frogs and snails in extreme ocean depths, both threatened by mining ...

From the vanishing Aral Sea to China's rapidly expanding coastal megacity, satellite imagery reveals just how dramatically ...

From tropical rainforests and deserts to grasslands and wetlands, snakes inhabit nearly every corner of the planet except Antarctica. While the vast majority are shy creatures that avoid people, a ...

Visit an Arizona animal sanctuary where gentle cows welcome hugs and friendly pigs happily roll over for belly rubs during a heartwarming encounter.

The Viking I and II missions at the nation’s bicentennial were among the most successful missions in the annals of space ...

The reimagined showcase for the work of the revered society and magazine inspires both childlike wonder at the natural world ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

The domestication of the horse was the most important event in human history,” says Danish geneticist Eske Willerslev in the ...

The Joshua Tree Forest near Meadview, Arizona is one of those places, a landscape so strange and beautiful that your first ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...