I would certainly use my voice to try and avoid anything that undermines confidence, so that parents are using vaccines fully.

I watched the piles of feces go up the conveyor belt... They made their way through the machine... A few minutes later I took a long taste of the end result: a glass of delicious drinking water.

If you want to build a great company, get the hell out of Silicon Valley.

Personally, I'd like to see more of our leaders take a technocratic approach to solving our biggest problems.

In energy, you have to plan and do research way in advance, sometimes decades in advance to get a new system that's safer, doesn't require us to go around the world to get all our oil.

Corruption is one of the most common reasons I hear in views that criticize aid.

Having kids has been a fantastic thing for me. It's meant that I'm a little more balanced. In my twenties I worked massively, hardly took vacation at all. Now, I, with the help of my wife, I'm always making sure I've got a good balance of how I spend my time.