Johnny Strange

Johnny Strange, 17, is the youngest person to climb seven summits.

This is a first. I get to feature someone who beat the world record of another young person I featured. Samantha Larson was one of our first "Young People Who Rock." She was then the youngest person to reach the Seven Summits at 18, an extraordinary feat. Now, Johnny Strange holds the the record.

At 17, he Johnny completed a journey he started with his dad five years ago. There is one climb per continent, including Mount Everest and Mount McKinley. His final summit climb was Australia's 7,310-foot Mount Kosiuszko.

Johnny didn't leave the tallest for last. He says that was because he wanted to appreciate the lone experience and not just part of the seven summit goal. At the end, he sent an email to his friends and family saying, "Never let anyone stifle your dreams no matter the feat, for if you have the heart and the courage, impossible is nothing."

Update: Watch the CNN.com Live interview