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Labeling products with information on the size of the carbon footprint they leave behind could help both consumers and manufacturers make better, environmentally friendly choices.

The enormous kite, which looks like a paraglider, works in tandem with the ship's engines, cutting back on fuel consumption, costs, and carbon footprint. "Using kites you can harness more energy than with any other type of wind-powered equipment," said German inventor Stephan Wrage, whose company SkySails is looking for lift-off on the back of worldwide efforts to boost renewable energy.

In a paper published in Proceedings of the National Academy of Sciences, a group of researchers and scientists show that the gains that have been made in stabilizing CO2 emissions in developed or "rich" countries since the signing of the Kyoto agreement, have been neutralized by the increase in CO2 emissions from developing nations as they produce goods for trade, primarily to developed countries. Because of this disparity, many groups are calling for a change to the Kyoto agreement practice of only counting CO2 emissions that are produced in-country, rather than the CO2 footprint of those products that are consumed.

"The unique facility looks and behaves like an actual house, and has been built to U.S. Green Building Council LEED Platinum standards-the highest standard for sustainable structures. The two-story, four-bedroom, three-bath Net-Zero Energy Residential Test Facility incorporates energy-efficient construction and appliances, as well as energy-generating technologies such as solar water heating and solar photovoltaic systems. "