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

A longtime backpacker, climber, and skier, Michael Lanza knows our national parks like the back of his hand. As a father, he hopes to share these special places with his two young children. But he has seen firsthand the changes wrought by the warming climate and understands what lies ahead: Alaska’s tidewater glaciers are rapidly retreating, and the abundant sea life in their shadow departs with them. Encroaching tides threaten beloved wilderness coasts like Washington’s Olympic and Florida’s…