Prophets 2

Top stories: Mysterious human skull carvings, algorithms for origami, and NASA’s newest astronauts

Groups see climate science review as chance to undercut regulation

Extinction that killed the dinosaurs may have led to frog explosion

Ancient Roman concrete outperforms our own, and science only just worked out why

In India, critics assail proposal to build 100 waste-fueled power plants

Popular Science moral code why should your self-driving car follow?

Scientists Are Not So Hot At Predicting Which Cancer Studies Will Succeed