The Alchemy of Us: How Humans and Matter Transformed One Another Guest: Ainissa Ramirez, material scientist, science communicator, and author of “The Alchemy of Us: How Humans and Matter Transformed One Another” When we think of inventions that changed the world, things like Edison’s light bulb or Franklin’s kite and key come to mind. But simple clocks and timekeeping had just as profound an effect. Find out the stories behind the inventions that have shaped and reshaped our lives.  The Fastest Jetpack in the World Guest: Richard Browning, Founder and Chief Test Pilot, Gravity Industries Ltd. Gravity Industries founder Richard Browning’s world-record-breaking jet suit is right out of the movies. Could its technology be widely used by ordinary people some day?