Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San Andreas fault meets the Cascadia subduction zone, an area that could give rise ...

If you’re struggling to find a great Valentine’s Day gift for him, we’ve got you. Our editors and writers tested hundreds of gifts to bring you a list of ones he’ll love, from fitness gear to ...