A lot of great content this week, including a premature sheep carried to term in a laboratory bag-and-hose womb, tech companies racing to put out the first production-grade flying car, and an archeological find in California that tentatively suggests proto-human activity in North America tens of thousands of years before we were supposed to be here. We also discuss the new Netflix original show Bill Nye Saves the World and Bill Gates who is working to save the world without a TV show—by bringing the number of Indian citizens with access to clean toilet sanitation from 62% to 100% before 2020.