Tomorrow is Earth Day, marked on April 22 since 1970. And President Obama will spend part of Earth Day in Everglades National Park talking about the threat of climate change. He gave a preview in his weekly address on Saturday.
PRESIDENT BARACK OBAMA: The Everglades is one of the most special places in our country, but it's also one of the most fragile. Rising sea levels are putting a national treasure and an economic engine for the South Florida tourism industry at risk.