Crazy-ass paddlers

The Polynesians got around... maybe all the way across the Pacific 20,000 years ago or more. Their crazy peregrinations must count as the most astounding human achievement of all. They lived in paradise and left it... for what? There was always another island until... there wasn't. Then, the endless sea: pure adventure and discovery. And it seems that they made it across, maybe more than once. Wow.