If you're in space on the way to Mars, and a conflict develops... you can't turn around and go back, because Earth is already gone on its orbit.

I'm a true believer in the strength of teamwork, in the power of dreams.

I'm a true believer in the strength of teamwork, in the power of dreams, and in the absolute necessity of a support structure.

We sleep very well in space. We have a sleeping bag each, and when you get into it, you float in the sleeping bag.

Molecular chemistry, the chemistry of the covalent bond, is concerned with uncovering and mastering the rules that govern the structures, properties and transformations of molecular species.

The science can tell you that the thousands of pseudo-scientific parenting books out there - not to mention the 'Baby Einstein' DVDs and the flash cards and the brain-boosting toys - won't do a thing to make your baby smarter. That's largely because babies are already as smart as they can be; smarter than we are in some ways.

The Ricky that the public see, whether it be on screen as a character, in public, or on social media, is very outgoing, and I'm a bit of a class clown. Then those who are closest to me know that I can be very sensitive. I can be quite insecure about myself.

With something like Dropbox, it was immediately like, 'Wow, this is literally something that anyone with an Internet connection could use.' Everyone needs something like this; they just don't realize it yet.