The Seine is set to feature prominently in the Paris 2024 Olympics’ Opening Ceremony—and in its marathon swimming events. But this urban waterway has been challenging to clean and keep clean after a particularly wet summer and high bacterial counts.

What can the Parisian organizers learn from the revitalization of a U.S. river that was so polluted that it inspired the creation of the Environmental Protection Agency? Scientific American associate news editor Allison Parshall takes us to the banks of the reformed Cuyahoga River in Ohio.

Plus, she gives us a look at the growing urban river swimming movement in Europe.

Recommended Reading

Training with 'Digital Twins' Could Boost Olympic Swimmer Speeds

Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper, Madison Goldberg and Jeff DelViscio. This episode was hosted by Rachel Feltman with guest and Scientific American associate news editor Allison Parshall. Our show is edited by Elah Feder, Alexa Lim, Madison Goldberg and Anaissa Ruiz Tejada, with fact-checking by Shayna Posses and Aaron Shattuck. The theme music was composed by Dominic Smith.

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.

The Seine is set to feature prominently in the Paris 2024 Olympics’ Opening Ceremony—and in its marathon swimming events. But this urban waterway has been challenging to clean and keep clean after a particularly wet summer and high bacterial counts.

What can the Parisian organizers learn from the revitalization of a U.S. river that was so polluted that it inspired the creation of the Environmental Protection Agency? Scientific American associate news editor Allison Parshall takes us to the banks of the reformed Cuyahoga River in Ohio.

Plus, she gives us a look at the growing urban river swimming movement in Europe.

Recommended Reading

Training with 'Digital Twins' Could Boost Olympic Swimmer Speeds https://www.scientificamerican.com/article/training-with-digital-twins-could-boost-olympic-swimmer-speeds/

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new every day: subscribe to Scientific American: https://www.scientificamerican.com/getsciam/

And sign up for Today in Science, our daily newsletter: https://www.scientificamerican.com/account/email-preferences/

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