162. 3D Print Metal at Room Temp, Brain Blasts From Kidney Protein, Volkswagen Self-Driving Test in Austin

Summary: Headlines: Revolutionary gel allows metal items to be 3D printed at room temperature | New Atlas (02:10) At 281 miles an hour, China's new high-speed maglev train is the world's fastest | Interesting Engineering (07:24) One shot of a kidney protein gave monkeys a brain boost | Ars Technica (13:36) Giant stone artifacts found on rare Ice Age site in Kent, UK | ScienceDaily (20:47) Volkswagen to start testing self-driving ID Buzz vans in Austin | TechCrunch (28:37)