Perhaps you could say that mountaineers are driven by ego or our competitiveness, but there's a lot more to it than that. Whether it's a huge face in the Himalaya or some crag in the woods behind your house, exploration offers us a unique perspective on the world that you can't really find anywhere else.

Specifically choose not to take a GPS. Just create a challenge. You can climb Everest or walk across Antarctica with minimal gear and still have that sense of adventure. But in terms of exploration, Google Earth has this world mapped down to the square foot.

Climbing, as my grandmother said, it's a pretty frivolous thing. She always wondered when I was going to get a real job. But climbing is a real job for me now, and I enjoy it. It's a gift that I'm able to do it, share adventure and motivation with people.

It's our human nature to explore. Tens of thousands of years ago, our species walked out of Africa, traveling far and wide across the entire planet, from the Arctic to the tip of Tierra Del Fuego, making us the most geographically diversified species on Earth.

I read a whole lot as a child, and, of course, I still read children's books.

As a teenager growing up in the suburbs of Washington, I ritually watched the Sunday-morning political talk shows with my family. We parsed and argued and jeered at the screen as national figures delivered careful, poll-tested talking points.

I understand why parents worry about books - they're worried about their kids. They want to keep their kids safe. But parents aren't always realistic.

Replacing your family's current health care with government-run health care is not the answer. In fact, it'll make health care much more expensive.