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.
Octopuses and cuttlefish have an amazing defense tactic. They can erect 3D spikes from their skin, hold them for an hour, then retract them and swim away.
Global sea level rise has been accelerating in recent decades, rather than increasing steadily, according to a new study based on 25 years of NASA and European satellite data.