Setting an aggressive enough carbon-reduction goal will result in an appropriate price for carbon and will help many a renewable technology. Consumer education will help. Most importantly, though, will be the continually declining cost trajectory of the real breakthrough in clean-technology costs driven by research and innovation. In the end, private capital is the real barometer of change.

Every big problem is a big opportunity.

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

The U.S. has fallen well behind Europe in recognizing climate change and the implications of climate change.

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.

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.