A new study on the 2017 quake that killed 300 in Mexico City finds that both its location and cause were unusual. But seismologists say it could happen again.
Venus and Mercury were closer earlier this month, but they're easier to see now. Don't miss these 2 innermost worlds in our solar system, in the west after sunset.
NASA's Parker Solar Probe, launching this summer, will travel closer to the sun than any spacecraft yet - and you can send your name along for the ride. Hear about it from William Shatner.
A new study projects increases in burning across the U.S. West and Canada. It suggests large fires - such those we've seen recently in California - may become more common.