Daryn Kagan

What do cells do when they see a broken piece of DNA? Cells don't like such breaks. They'll do pretty much anything they can to fix things up. If a chromosome is broken, the cells will repair the break using an intact chromosome.

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.

I always start the day with a cup of hot water and lemon - I find it really cleanses and hydrates me. I have very sensitive, dry skin, so I have to be careful about what I put on my face. My must-haves are Dermalogica cleansing gel and L'Or De Vie Creme Riche by Dior, which is thick and nourishing.