Unseasonably, in recent days, the temperature at the North Pole has soared to the melting point of ice. That's about 30-35 degrees F (17-19 C) above normal.
Volcano scientists issued a second Orange Alert on Wednesday. "At this time, we cannot say with certainty that explosive activity will occur, how large the explosions could be, or how long such explosive activity could continue."
Adult female sea turtles - on beaches from North Carolina to Texas and throughout the Caribbean - are crawling out of the ocean and laying their eggs. Here's an update from a biologist who's been studying these turtles for 36 years.
NASA researchers have launched a citizen science project requesting your reports on landslides you've seen, heard about in the news, or found in an online database. Photos welcome!
Yellowstone's supervolcano won't erupt anytime soon. Neither will other similar systems around the world. A new study says we'll see many warning signs before a supervolcano erupts.