"The attention this series brought to our national parks is unprecedented,” said Sierra Club Executive Director Carl Pope. "It’s clear that 100,000 Americans have spoken up to be champions of our parks because they want these beautiful areas protected for future generations." 

Prior to the series airing, Sierra Club activists organized over 700 parties around the country, where people gathered with family and friends to watch sneak previews of the documentary and wrote letters to Interior Secretary Ken Salazar asking him to protect America's national parks from global warming.

"The biggest threat facing our parks today is global warming," Pope said. "In Yellowstone, grizzlies are watching their food source decline as a result of warmer temperatures. The glaciers in Glacier National Park are receding at an alarming rate, and scientists say Joshua trees could disappear from Joshua Tree National Park."

 “Americans everywhere understand the beauty and majesty of our national park system,” said Pope. “These parks belong to all of us, and it's up to us to protect them for our children and grandchildren."

Through its Resilient Habitats campaign, the Sierra Club has been working to ensure that federal agencies like the National Park Service make it a priority to protect America's public lands and wildlife from global warming. For more about the Sierra Club Resilient Habitats campaign, go to: www.sierraclub.org/resilienthabitat

Sierra Club also collaborated with local PBS outlets across the country in raising awareness about local parks and the need to ensure diverse communities have access to wild places.