🏛️ The 2,000-Year-Old Rock That Gets Stronger with Age!

Roman sea walls poured around 2,000 years ago are stronger today than they were on the day they hardened. Read more on the newsletter. 📬 Get the free newsletter with fast facts + a hands-on activity: https://thecuriouspost.kids 🎙️ Also on Spotify Podcast - search "The Curious Post Podcast"