Greenpeace Global Warming Campaign Assistant Ryan Patterson, center, talks with Ray Rivera, Director of External and Intergovernmental Affairs for the U.S. Department of the Interior on Earth Day, April 22, 2009, in Washington. Patterson and...

Greenpeace Global Warming Campaign Assistant Ryan Patterson poses with Greenpeace activists at the U.S. Department of the Interior on Earth Day, April 22, 2009, in Washington. Greenpeace delivered petitions with more than 80,000 signatures...

Greenpeace Global Warming Campaign Assistant Ryan Patterson poses with Greenpeace activists at the U.S. Department of the Interior on Earth Day, April 22, 2009, in Washington. Greenpeace delivered petitions with more than 80,000 signatures...

Greenpeace Global Warming Campaign Assistant Ryan Patterson talks with Ray Rivera, Director of External and Intergovernmental Affairs for the U.S. Department of the Interior on Earth Day, April 22, 2009, in Washington. Patterson and Greenpeace...

Greenpeace Global Warming Campaign Assistant Ryan Patterson, center, talks with Ray Rivera, Director of External and Intergovernmental Affairs for the U.S. Department of the Interior on Earth Day, April 22, 2009, in Washington. Patterson and...

Greenpeace activists at the U.S. Department of the Interior on Earth Day, April 22, 2009, in Washington. Greenpeace delivered petitions with more than 80,000 signatures calling on Secretary Salazar to revoke regulations that reduce protections to...