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.
The long-lived Opportunity Mars rover keeps finding surprises, including these possible stone stripes. On Earth, similar features result from repeated freezing and thawing of wet soil.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. She and her husband live in Tennessee, where they enjoy guitar playing and singing. They have 2 grown sons.