It's been a great adventure, everything I hoped for. But it's time to go home. I miss my family. I miss the Earth.

If I told you the tragedy parts, we'd all sit here and cry.

It's thrilling. There's birth and death and frustration and victory in raising horses. It's like a little microcosm of life is built into the short lives of these creatures.

We constantly learn new lessons up here. The experiences we gather will enable us to establish a long-term station on the moon and to go on to Mars.

I think social media has been really great for me.

The more you densify a city, the more congestion will increase, however technology changes... cities so packed that they will no longer function... vertical sprawl.

At DonorsChoose.org, we've seen what technology can do for a classroom. We make it easy for teachers to request the materials they need most for their classrooms and for donors to make a meaningful contribution to education.

If you don't stay up with technology, you're gonna fall out of the loop and not make any money.