Before They're Gone: A Family's Year-Long Quest to Explore America's Most Endangered National Parks

A lifelong backpacker, Michael Lanza knows our national parks like the back of his hand. As a father of two, he hopes to share these special places with his kids. But he has seen firsthand the changes wrought by global warming and understands what lies ahead: melting glaciers, disappearing species, and inundated coastlines. To Lanza, it feels like the house he grew up in is being looted. Painfully aware of the ecological—and spiritual—calamity that global warming will bring to our nation's pa…