Why Earth’s Newest Glacier is Inside an Active Volcano

It was the scene of the most cataclysmic natural disaster in American history, a place of unimaginable devastation. Today, the crater of Mt. St. Helens Volcano is experiencing a rebirth — it’s the site of the world’s newest glacier. Not only is it the newest, it’s also one of the few that’s growing. What’s behind its growth and how might it one day help scientists discover life on other planets?