There are parts of the country in America, in the Midwest, where wind is a big resource, and we should absolutely use it. But to try and apply it nationally doesn't make sense. There are technologies that will work that are appropriate to certain regions.

There's no doubt in my mind over the next 25 years how we drive, how we build our houses, how we fly, how we build our buildings, will all change.

Not thinking it's possible is a failure of imagination.

Letting the perfect be the enemy of the good is one of the reasons we have a coal-dependent infrastructure, with the resulting environmental impact that all of us can see. I suspect environmentalists, through their opposition of nuclear power, have caused more coal plants to be built than anybody. And those coal plants have emitted more radioactive material from the coal than any nuclear accident would have.

Is it 10 years, 20, 50 before we reach that tipping point where climate change becomes irreversible? Nobody can know. There's clearly a probability distribution. We need to ensure this planet, and we need to do it quickly.

Your cellphone has 10 sensors, and your car has 400. But your body has none - that's going to change.

The state of healthcare today is that we are busy in the practice of medicine vs. being in the science of medicine.