In this episode of Science Quickly, we explore how an El Niño–driven Kelvin wave could increase coastal flooding risks in California, why researchers say a plan to weaken vaccine requirements could leave Florida vulnerable to major measles outbreaks and what experts want people to know about the dangers of a garlic-and-honey remedy that’s gone viral on TikTok. Recommended Reading:Why this El Niño will be the largest in living memoryThe Atlantic hurricane season has been so quiet it’s unprecedentedThis TikTok home remedy could cause botulism—here’s what to knowE-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover!Discover something new everyday: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Allison Rodgers and Jeff DelViscio. Marielle Issa and Aaron Shattuck fact-checked our show. Our theme music was composed by Dominic Smith.Learn more about your ad choices. Visit megaphone.fm/adchoices