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b'Early Migration To North America Likely Wasn\\u2019t A One-Way Road\\nThe story of how early humans migrated to North America might not be as simple as we once thought. The prevailing theory was that ancient peoples traveled from Siberia to modern-day Alaska using the Bering strait as a land bridge. But new genomic research, published in Current Biology, reveals movement in the opposite direction, back to Asia, as well.\\nIra talks with Sophie Bushwick, technology editor at Scientific American, about the new research, and other top science stories of the week, including a new AI voice generator, a green comet visible visit in the night sky for the first time in 50,000 years, and how a specific atmospheric weather pattern caused historic flooding in California.\\nLab-Grown Meats Are Finally Inching Closer To Commercial\\nThe United States is one of the largest consumers of meat in the world, with the average American eating 273 pounds of meat per year That\\u2019s not to say that tastes aren\\u2019t changing: Nearly a quarter of Americans say they have cut down on meat consumption, and 41% of Americans under 50 have tried plant-based meat.\\nThere\\u2019s been a wave of companies and academic institutions working on cellular agriculture\\u2014a fancy way of saying animal products grown from cells in labs, and not from a meat farm. While lab-grown meat is not available in grocery stores yet, the FDA gave approval to make meat from animal cell culture for the first time in November. Upside Foods, the company making the product, makes chicken from cells grown in tanks.\\nJoining Ira to talk about cell agriculture are Andrew Stout, cellular agriculture biologist based in Boston, Massachusetts, and Ary\\xe9 Elfenbein, co-founder of Wildtype, based in San Francisco, California, a company working on growing seafood from cells.'