Despite being perhaps the most recognizable animal on the planet, biologists have been puzzled for centuries over how the zebra got its stripes. But scientists have worked out an answer, and it's nothing to do with camouflaging themselves in long grass.
No offense to Betsy Ross, but this is an American flag made for the 21st Century. It's a digital weave created from the avatars of Twitter users who tweet about Independence Day using a July 4th hashtag.
Something is wrong in Jupiter. Astronomer Anthony Wesley's photos show that one of its two dark stripes is gone. Maybe Sir Arthur C. Clarke was right and the gas giant will turn into a star to jumpstart life in Europa.