Watch a short biography video of Theodore Roosevelt, the 26th president of the United States who focused on ecological preservation. #Biography #TheodoreRoosevelt Subscribe for more Biography: http://aetv.us/2AsWMPH Dive deeper into Biography on our site: http://www.biography.com Follow Biography for more surprising stories from fascinating lives: Facebook - https://www.facebook.com/Biography Instagram - https://www.instagram.com/biography Twitter - https://twitter.com/biography Biography highlights newsworthy personalities and events with compelling and surprising points-of-view, telling the true stories from some of the most accomplished non-fiction storytellers of our time.