As for companies invested in the space - I think its important to distinguish between a good investment and a material climate change technology - you can have the first without the second, even in the "clean tech" space.

Communication always changes society, and society was always organized around communication channels. Two hundred years ago it was mostly rivers. It was sea-lanes and mountain passes. The Internet is another form of communication and commerce. And society organizes around the channels.

In the next 10 years, data science and software will do more for medicine than all of the biological sciences together.

We don't need a fuel that's cleaner, we need a fuel that happens to be cleaner, but is half the price of oil.

Everybody else is afraid to fail. I do not really care because when I fail, I try something new.

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.

Certain food-based biofuels like biodiesel have always been a bad idea. Others like corn ethanol have served a useful purpose and essentially are obsoleting themselves.