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A device the size of a deck of playing cards that can track temperature, humidity, light and barometric pressure is moving from the shipping world to the realm of research to help develop a better understanding of how the climate is changing.

International climate negotiators were at odds Tuesday on how to raise billions of dollars to help poor countries cope with global warming. A major shipping group is willing to help, endorsing a proposal for a carbon tax on vessels carrying the world's trade.

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.