Nevada earthquake swarm continues

Amanda LewanEarth Observation

The U.S. Geological Survey (USGS) reports a 4.6-magnitude earthquake in northwestern Nevada Tuesday night. They first reported it as a 4.9-magnitude and later downgraded it. This earthquake is the largest one recently in an earthquake swarm that has been occurring in the sparsely populated northwest corner of Nevada, near the borders of Oregon and California, since July 2014.

Air quality under new scrutiny

Amanda LewanEarth Observation

As part of the preparations for the Sentinel-5 Precursor air-quality monitoring mission, scientists teamed up in Romania recently to test different airborne systems that will be used to ensure this new satellite delivers accurate measurements of pollutants in the air we breathe.