carbon-credits

—>A free service that lets you earn cash for trimming your energy use, My Emissions Exchange tracks your eco-friendly ways, turn your actions into carbon credits and sell them online to companies looking to pay to pollute.  More »

—>Starting this summer, Continental will offer passengers the ability to buy carbon credits to offset the environmental cost of their travel. Though airlines contribute to global warming, air travel is one of the most carbon-efficient ways to cross long distances.

[Continental's] program, being carried out with Sustainable Travel International and announced Wednesday, will let fliers calculate the so-called carbon footprint of their trips' greenhouse gas emissions and buy carbon offsets online from Sustainable Travel.  More »