![ACS Science Elements show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/026/077/small/science-elements.jpg)
Summary: Red blood cells talk to platelets, with implications for diabetes; Healthful compounds in tomatoes increase over time in organic fields; New process promises to reduce costs of a clean-coal technology; Preening over new technology for monitoring PCBs in seabirds; Tin whiskers grow into a multi-billion-dollar threat to electronics products