Strong winds lift snow off a glacial cap on a sunny day in Iceland. Image: National Geographic   Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy . You may unsubscribe at any time. What happens when your homeland begins to melt? Icelandic poet and author Andri Snær Magnason explores this in Time and Water , a new documentary from National Geographic. Directed by Sara Dosa , archival and family photographs and folktales weave personal history with the story of the land in the face of climate change . “In a time when the violence of the climate crisis ravages the earth, we need stories that can act as maps for our shifting world,” Dosa says in her director’s statement.…