Kris Wang is a fourth-year undergraduate student at Scripps Institution of Oceanography at UC San Diego, where he is studying geosciences with a focus on volcanology and igneous petrology.

There are only a few known fields of tektites in the entire world, and scientists just found another in Brazil.

In the forests of the southeastern United States, dense tree cover dominates most landscapes. That's why the Appalachian Trail is sometimes nicknamed "The Green Tunnel." But avid hikers know that ...