What's the latest date that measurable snow has fallen in different parts of the United States? Check this interactive map from NOAA to find your record latest snow.
How do we know earlier industrial civilizations on Earth didn't rise and fall long before humans appeared? That's the question posed in a new scientific thought experiment.
Europe's CryoSat satellite was used - over 7 years - to track 10,000 miles (16,000 km) of Antarctic coastline. It can be seen warm ocean water is eating away at Antarctica's floating margins.