Reaching Earth’s Highest and Lowest Points

Vanessa O’Brien has summitted the highest peak on every continent, traveled to the Mariana Trench—Earth's lowest point, and visited the North and South poles. Learn how this banker-turned-mountaineer uses humor and tenacity to accomplish great feats. Guest: Vanessa O'Brien, British and American mountaineer, first woman to reach Earth’s highest and lowest points, first American and British woman to successfully summit K2, and author of "To the Greatest Heights: One Woman's Inspiring Journey to the Top of Everest and Beyond"