Cuckoos lay eggs that mimic the eggs of other bird species; those eggs are then looked after by the unsuspecting foster parent. Cuckoos have been divided into races based on the identity of the egg type that the females mimic. In the 14 September
Thousands of people around the world gathered to show support for science today. Here’s a sampling of sights and signs from the Marches for Science in Berlin, Chicago, and Washington, DC.