Colorado Senator who co-sponsored legislation to keep the Arctic National Wildlife Refuge wild. He serve in the US House of representatives from 1999 to 2009 before joining the Senate.
A fitness enthusiast, he worked for many years as an instructor at the Colorado Outward Bound School.
He led the legislative effort to get Colorado energy companies to use alternative fuels.
His father was a thirty-year member U.S. House of Representatives, and his father's brother was a cabinet member for President Kennedy.
Politics runs in the family: U.S. Representative Tom Udall is his first cousin.