This is Scientific American’s Science Talk. And she’s the author of the 2020 book The Alchemy of Us: How Humans and Matter Transformed One Another. And even though it’s written for adults, it’s a finalist for the AAAS/Subaru 2021 Young Adult Science Book Award. And follow us on Twitter, where you’ll get a tweet whenever a new item hits the Web site. For Scientific American’s Science Talk, I’m Steve Mirsky.