Nearly 70 percent of Americans have never heard the phrase "smart grid," but once they learn more, they come to expect it to carry significant benefits and save them money.

ExxonMobil shed light on how it is expanding the world's energy supply while reducing its environmental impacts on Tuesday, the day before the oil giant faces a shareholder vote to force more disclosure on its Candaian oil sands investments.

Rather than waiting for regulatory conditions to solidify, leading companies are taking their cues from the market by investing in climate change initiatives, reporting on their performance and leaning on their supply chains to reduce emissions, according to a new survey of executives from Ernst & Young.

"Everything's up for reinvention," says Serious Materials CEO Kevin Surace, who with other business innovators urged building operations executives to find new, green ways to address old problems -- a strategy that can produce substantial reductions of impact and returns on investment.

The market for tools measuring corporate greenhouse gas emissions has nearly doubled since 2008 as an increasing number of customers, investors, and regulators pressure companies to report on their climate impacts. This guide will help you examine the tools on the market and choose the solution that works best for your company’s needs.

Philips, Osram Sylvania, and GlacialTech Inc. are among the firms recently introducing products for an LED market that's expected soar in the next decade. New research forecasts that LEDs will account for almost half of a $4.4 billion market for lamps in the commercial, industrial and outdoor stationary sectors by 2020 -- and the rivalry is heating up among lighting companies trying capture the lion's share of the business.

PNC, a big regional bank based in Pittsburgh, has become the bank that environmental activists love to hate because of its support for mountaintop removal mining.

EDF's Climate Corps will send 51 fellows to 47 companies this summer to further the drive for energy efficiency in business. The fellowship program has grown more than seven-fold since its start three years ago.