Kelvin-Helmholtz clouds are a rare and often spectacular weather phenomenon whose rolling, wavy appearance can be both beautiful and frightening.

Thundersnow: Marvel superhero or heavy metal band? Neither, actually, though the name of this rare aspect of winter weather sounds as awesome as it is.

The New7Wonders of Nature campaign has winnowed 440 prospects down to just 28 "Official Finalist Candidates" with voting scheduled to end on November 11, 2011.

An abundance of animals bear the burden of doubly descriptive names. An identity crisis in the making? The animals aren't saying so it's up to us to decide.

These 10 extinct species are certainly gone but they're not forgotten, and they may not even be gone for good if biological technology continues to advance.

Anteaters are Nature's “termite terminators”, and these bizarre creatures have perfected the art of ant-eating to such a fine degree they can eat little else.

Amber (fossil tree sap) can contain prehistoric insects, crustaceans, frogs and lizards, preserved in exquisite detail and all many millions of years old.

This fun installation is part art, part social commentary, and all eco-friendly. Designers moved an entire office outdoors and took "green" to the extreme!

These 10 amazing animals are in the pink and they're not afraid to show it. Pink pigmentation isn't common in the animal kingdom but it IS uncommonly beautiful.

Geysers have entranced observers from time immemorial with their sudden appearances, explosive power and the ability to conjure up rainbows on a cloudless day.

Have you seen this island? The creators are searching for the lushly vegetated floating sculpture after it was cut free during a U.K. festival in July.

Lakes? In my frozen Antarctica? This in-depth (brrr!) look at 7 amazing Antarctic lakes shows us the 7th continent still has a few tricks up its frosty sleeve.

On a beach in Mexico, garbage from around the world washes up and settles on the sand. Photographer Alejandro Duran manages to make this sad waste look lovely.

Travelers going through Amsterdam's Schiphol Airport can take a pleasant time out in the new indoor/outdoor nature park featuring "mixed reality technology."

Among the 42 sites considered for inscription on UNESCO's World Heritage List this June are 10 new natural properties deserving of appreciation and protection.