Theoretical physicist and cosmologist Stephen Hawking died this week at the age of 76. Hawking challenged and inspired a generation of physicists, and we remember his life and legacy. Plus, blockchain is the technology that makes possible every transaction made with Bitcoin—or any digital currency, for that matter. And when Bitcoin skyrocketed on the stock market last year, it turned average Joes into millionaires. Why just Joes? Most surveys show that 95 percent of blockchain enthusiasts and crypto investors are male. We discuss the future of women in blockchain. Then, inside the fossilized bones of Archaeopteryx, one of the earliest bird-like dinosaur specimens, researchers have found evidence of a capability for flight. Finally, what does a Tyrannosaurus rex actually look like? You might immediately think of the iconic, roaring lizard from the Jurassic Park films. But one scientific illustrator turns to paleontology studies and fossil finds—poring over the science to accurately reimagine creatures that no longer exist today. And what he renders might surprise you. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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“What did the council decide on item 42?” — answered with the speaker and the moment.