Paul Reichert is a research scientist at Merck, working on improvements to how we administer drugs to patients. Paul's problem is this: How can you run experiments in space to learn how to make better drugs on Earth? See omnystudio.com/listener for privacy information.

Hannah Ritchie is a data scientist and the deputy editor of Our World in Data. She is also the author of Not the End of the World: How We Can Be the First Generation to Build a Sustainable Planet. Hannah’s problem is this: How do you use data to get past the doomsday headlines and solve big...

Why has rabies invaded our nightmares for centuries? Author and veterinarian Monica Murphy tells us about the cultural history of rabies (which involves vampires and werewolves!) and how our long nightmare with the disease came to an end. Then, wildlife biologist Kathy Nelson tells us about a...