74 years old (Born on July 18, 1950)
Happy Birthday, Senator Mark Udall! From climbing mountains to conquering Capitol Hill, you've scaled great heights. Your tireless fight in Congress to protect wilderness areas—especially your memorable push keeping the Arctic National Wildlife Refuge forever wild—has earned you admiration across generations (and even among moose and bears).Your years representing Colorado from 1999–2009 in the House and then continuing strong into the Senate solidified your legacy as a champion for nature and sustainability. May your birthday be filled with moments just like those landmark legislations: bold, visionary—and preferably accompanied by cake as breathtakingly rich as Colorado’s wilderness views!