Leaf-based computer chips, and evidence that two early human ancestors coexisted

First up this week, making electronics greener with leaves. Host Sarah Crespi talks with Newsletter Editor Christie Wilcox about using the cellulose skeletons of leaves to create robust, biodegradable backings for computer chips. This sustainable approach can be used for printing circuits and making organic light-emitting diodes and if widely adopted, could massively reduce the carbon footprint of electronics.  Next on the show, Kevin Hatala, a biology professor at Chatham University, joins producer Meagan Cantwell to discuss fossil footprints unearthed in the Turkana Basin of Kenya. A 13-step long track with three perpendicular footprints likely show two different species of early humans, Homo erectus and Paranthropus boisei, walked on the same shorelines. This week’s episode was produced with help from Podigy. About the Science Podcast Authors: Sarah Crespi; Meagan Cantwell; Christie Wilcox  Learn more about your ad choices. Visit megaphone.fm/adchoices