David Gelbaum has quietly poured nearly $1 billion into environmental companies and causes. He advocates nature preserves and solar energy. (Image: Sandy Huffaker for The New York Times)

It’s not the usual drive of choice for wealthy former hedge fund managers like David Gelbaum. Then again, there’s not much that is business as usual about Mr. Gelbaum, an intensely private person who happens to be one of the nation’s largest — and largely unknown — green technology investors and environmental philanthropists.

Mr. Gelbaum has invested $500 million in clean-tech companies since 2002 through his Quercus Trust, amassing a portfolio of some 40 businesses involved in nearly every aspect of the emerging green economy, be it renewable energy, the smart electric grid, sustainable agriculture, electric cars or biological remediation of oil spills. He has poured almost as much into environmental causes.

Read on: http://www.nytimes.com/2010/05/09/business/09green.html

Energy secretary Steven Chu has been in office for only a little over a year, but he's nonetheless managed to help lay the groundwork for a fundamental shift in how the US tackles climate change. (Photo: Peter Yang)

It’s late November 2009, and US energy secretary Steven Chu is leaning against a fake sink in a fake kitchen. Chu is 62 years old and athletically trim with graying black hair.

He’s wearing a rumpled pin-striped suit, argyle socks, and gold-framed glasses. Chu is a renowned physicist, a cabinet appointee, and the winner of a Nobel Prize. But that’s not why he’s now being treated like a rock star. This morning a small crowd of scientists, politicians, and local businesspeople are flocking to him because he’s got cash, specifically $75 million in stimulus funds for the Ohio subsidiary of the American Electric Power utility.

Read on: http://www.wired.com/magazine/2010/04/ff_stevenchu?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+wired/index+(Wired:+Index+3+(Top+Stories+2))&utm_content=Google+Feedfetcher