Having marked its first anniversary on orbit, NASA's Solar Radiation and Climate Experiment (SORCE) satellite has hit its stride.

While cities provide vital habitat for human beings to thrive, it appears United States cities have been built on the most fertile soils, lessening contributions of these lands to Earth's food web and human agriculture, according to a study by NASA researchers and others.

As the tropical oceans continue to heat up, following a 20-year trend, warm rains in the tropics are likely to become more frequent, according to NASA scientists.

Using measurements from a NASA aircraft flying over the Arctic, Harvard University scientists have made the first observations of a molecule that researchers have long theorized plays a key role in destroying stratospheric ozone, chlorine peroxide.