The clean technology wave just got a little bigger. This tends to be a side-effect of interest from billionaire investor George Soros. And, as usual, it's more than just money; it's more than just a return. Soros, yet again, is trying to save the world. Interestingly, the bold move was announced at a meeting on climate change sponsored by Project Syndicate – an international association consisting of 430 newspapers from 150 countries (and thus with clear ties to the past, rather than future).

The investor and founder of Soros Fund Management LLC is planning to put $1 billion into clean-tech opportunities using what he calls "rather stringent criteria," which involves being "profitable but should also actually make a contribution to solving the problem [i.e., of clean technology adoption and proliferation]." Soros didn't provide any other details on the nature or scope of his investments.

It was June. I was a little broke. And my Mercedes SUV, that I'd purchased when I was single, young and foolish, got a flat tire. The tires were ready to be replaced anyway, and there was no "patching." It was dead.

That wasn't all that was wrong; I'd done a mental list of nits and major issues (like, the front windows wouldn't go up or down; the windshield was leaking; the rest of the tires were pretty shot) that added up to between $1500 and $3500, depending on how far I wanted to go. Really, it was $1000 to get the car in working order again.

I had two children, ages four and one. My house was within a few blocks of three bus lines. The whole family had bicycles and we live in a city that values alternative modes of transit. I was starting to really freak out about global warming; would my kids even have wineries nearby by the time they reached the age of consent? The papers said no.

The next day, a friend emailed. "Would anyone like to participate in a car diet?" There were freebies; a bus pass, use of a Flexcar, some goodies for our bike. We handed over our keys a few weeks later in a ceremony, with the mayor and the Channel 8 news crew standing by.