Teenage Dream' was the hardest breakup for me.

One thing I'd tell an up-and-coming singer is to never rely on other people for anything. The more self-sufficient you can be, the better off you'll be.

There's a lot of little 'Bonnie-isms' in 'Teenage Dream' that I was hoping to keep for myself.

In my mind, I imagined L.A. to be skyscrapers on the beach. Of course, that's not what it actually looks like. And growing up watching 'Beverly Hills 90210' and 'Melrose Place,' I always had an obsession with L.A. and California in general.

Can a great artist be mean-spirited, grasping, harsh to his family, violent in his emotions, vindictive in his hatreds, an all-purpose scoundrel? If our test cases are the likes of Wagner, Picasso, and, let me say, Dickens, the answer is a resounding yes.

My parents would never throw the kids in first class for the flights; they'd be up front, and we'd be economy - we knew we were lucky just to be travelling.

When I came home for the summer after my first year of college, I told my mother that my best friend and I were driving to California. She laughed out loud - 2,000 miles in a what? Well, my best friend had an old Chevy. What could go wrong?

I'm thrilled to be working with the Science Channel. A chance to shine a light on the wonder and exciting possibilities of science with such a smart and talented team is a dream come true for me. It's very gratifying to me personally, and it's also a way to honor my family.