Scientists are monitoring the amount and age of sea ice to see if the declining trend persists.

NASA satellites finds vast quantities of industrial aerosols and smoke from East Asia and Russia travel from one side of the globe to another.

For the first time, scientists have pinpointed a specific area in the North Atlantic where microseisms, small Earth tremors created when ocean waves traveling in opposite directions merge together, are emitted from the depths of the ocean.

For reasons not fully understood, auroras are more common in the spring than at other times. The five-craft THEMIS fleet may help scientists determine why.

Thanks to an innovative collaboration, NASA earth science satellite measurements are improving short-term weather predictions.