In the toxic waters of Sulphur Cave in Steamboat Springs, Colo. live blood-red worm blobs that have attracted international scientific interest. We don special breathing gear and go into the cave with a team of researchers. There, we collect worms and marvel at the unique crystals and cave formations that earned Sulphur Cave a designation as a National Natural Landmark in 2021. Then we learn how extremophiles like these worms are helping scientists search for new antibiotics, medicines and even models for robots that can explore uneven, dangerous terrain, like caves on other planets.
