Explore the seeming impossibilities behind our planet’s strangest, most unique natural wonders in Untold Earth, a new series from Atlas Obscura in partnership with Nature and PBS Digital Studios. From fragile, untouched ecosystems to familiar but unexplained occurrences in our own backyards, this series chases insight into natural phenomena through the voices of those who know them best. Untold Earth premieres Wednesday, April 12, on PBS Terra.