SpaceX and Blue Origin think point-to-point space travel will replace flights as the preferred means of passenger travel. A plane ride from New York City to Shanghai is about 15 hours – and it could be as long as 29 hours with connecting flights.

With point-to-point travel, SpaceX says it could get you there in less than an hour. How realistic is this approach to long-haul travel?

Transfer learning is a statistical technique that’s been getting more attention lately that enables you to reuse a model for a different task than what it was trained for. In this episode, Siraj Raval shows you how to use transfer learning to predict instances of gold deposits using publicly available satellite imagery.