“Vantablack” is the darkest pigment ever made — and there’s a pitched battle between artists over who gets access to it. If you’ve ever wondered hey, where did all the xenon on Earth come from? (and who hasn’t?), here’s your answer: Comets. An exhaustive list of ever lie told by President Trump since he assumed office. An experiment finds that drones can deliver defibrillation equipment to remote areas 4X faster than ambulances. Are casinos legally liable for the compulsive behavior of problem gambers? Why “I was afraid” has become the new and unchallengeable excuse when a police officer kills a black man. A video game that shows what 4D objects would look like passing through a 3D world.