Cooling Earth with asteroid dust, and 3 billion missing birds

1 rich Libsyn https://www.libsyn.com 90 600 Cooling Earth with asteroid dust, and 3 billion missing birds On this week’s show, science journalist Josh Sokol talks about a global cooling event sparked by space dust that lead to a [huge shift in animal and plant diversity 466 million years ago-linkTK.] (Read the related research article in Science Advances.) And I talk with Kenneth Rosenberg, an applied conservation scientist at Cornell University, about steep declines in bird abundance in the United States and Canada. His team estimates about 3 billion birds have gone missing since the 1970s. This week’s episode was edited by Podigy. &nbsp; Ads on this week’s show: MOVA Globes; KiwiCo.com &nbsp; Listen to previous podcasts. &nbsp; About the Science Podcast &nbsp; [Image: Public domain; Music: Jeffrey Cook] &nbsp; &nbsp;++ Authors: Sarah Crespi; Josh Sokol Science Magazine Podcast http://www.sciencemag.org <iframe title="Libsyn Player" style="border: none" src="//html5-player.libsyn.com/embed/episode/id/11315147/height/90/theme/custom/thumbnail/yes/direction/forward/render-playlist/no/custom-color/88AA3C/" height="90" width="600" scrolling="no" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe> https://assets.libsyn.com/secure/item/11315147