Fifty four years ago JFK, at the height of the Cold War, set us on a path to the moon.

Today, absent the Cold War and in a world where a new photo or dating app becomes a billion dollar effort, it’s hard to think in terms of such massive, global and societal undertaking.

Yet one man does. Be it electric cars, solar powering the nation, or going to Mars, Elon Musk thinks differently than everyone else...but he does want all of us to join him in that effort. The Washington Post's Joel Achenbach has written the cover story for National Geographic's special Mars Issue

My conversation with Joel Achenbach: