60-second Science

The 2024 Summer Olympics in Paris came to a close on Sunday—and swimmers swam the Seine as promised. The two astronauts sent to the International Space Station on a Boeing Starliner craft in June are still in limbo, with no set return flight. The EPA is acting quickly to suspend sales of products that contain the pesticide dimethyl tetrachloroterephthalate over safety concerns. Plus, we discuss a new theory of how the pyramids were built (and no, it doesn’t involve aliens). Recommended reading: Cleaning Up Paris’s Poop River for the Olympics  https://www.scientificamerican.com/podcast/episode/cleaning-up-the-poop-polluted-seine-for-the-paris-olympics/  Lost Branch of the Nile May Solve Long-Standing Mystery of Egypt’s Famed Pyramids https://www.scientificamerican.com/article/egypts-famed-pyramids-overlooked-a-long-lost-branch-of-the-nile/  E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific