Nathan Sawaya

There's a fun, nostalgic aspect to Legos - people connect to the art on a different level. But it's also a medium that lets me design anything I can imagine. I especially enjoy creating curvy forms using rectangular pieces. Up close, you notice the sharp angles, but when you back away, the corners blend into curves.

When people said Africa would change me, I didn't understand what they meant. To see the poverty in the townships, for instance, is overwhelming. I found it heart-wrenching to see young children walking barefoot and hungry in the dirt. I'm the kind of person who wants to change the world right here and now, so I got frustrated.

The jet stream is a very strong force and pushing a balloon into it is like pushing up against a brick wall, but once we got into it, we found that, remarkably, the balloon went whatever speed the wind went.