What seems to be yellow paint streaks slicing through a collection of colors are ridges of wind-blown sand in the Sahara.
The Guyana Iwokrama forest is protected from deforestation, which generates one-fifth of all greenhouse gases.
An explosion of blooms occur when deep currents bring nutrients up to the water surface and spurs the growth of algae.
Ride could have done anything, but she chose to devote her life to science and served as an inspiration to millions.
The countdown is on. We're talking hours here. Climate Central’s first book -- Global Weirdness -- hits the stores on July 24.
A rare shot of "noctilucent" clouds, eerie, thin threadlike clouds of mysterious origin that appear at twilight.
Following heavy rains in Nevada, a beautiful double rainbow spread across a roadway.
A NASA animation of seasonal vegetation and it's effect on Earth's global atmospheric carbon dioxide.