Trilobites: The Dirty Secrets Saved in Dead Birds’ Feathers The feathers of birds preserved in natural history museum collections record changes to historical air quality across America’s Rust Belt, a new study finds. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Ocean-Clogging Microplastics Also Pollute the Air, Study Finds‘I Want What My Male Colleague Has, and That Will Cost a Few Million Dollars’Democrats Are United on Climate Change, but Not on What to Do About ItRites of Passage: ‘Will You Stay With Me Until I Die?’Solar flare: 'Largest ever' blast equal to 80 BILLION megatonnes of TNT lights up the skyPink Moon 2019: What are all the Full Moon names this year? Where do the names come from?