![25 days earlier: global warming makes birds nest sooner](/content/images/size/w600/2022/04/great-tits-lay-eggs-early.jpg)
25 days earlier: global warming makes birds nest sooner
In 10 seconds? A century-old collection of birds’ eggs has helped scientists determine that birds are nesting earlier than they used to a hundred years ago. The reason? Climate change. What’s the breakthrough? Researchers have fo...