Geologists visited the Kilauea volcano crater in Hawaii to collect lava samples. Officials from the United States Geological Survey (USGS) Hawaiian Volcano Observatory landed on the floor of ...

About 3.8 billion years ago, two massive canyons likely formed on the moon in a span of less than 10 minutes, according to ...

It's been one week since the devastating crash of a medical jet in Northeast Philadelphia. Here's what we know so far.