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At the G20 summit in St Petersburg 33 nations and the EU confirmed they would join the United States and China in working together under the Montreal Protocol and the UNFCCC to limit the use of Hydroflourocarbons, or HFCs, for cooling. United Technologies has pioneered a way to replace HFCs with C02 directly from the atmosphere.
Most refrigeration relies on a potent group of greenhouse gasses called HFCs. But John Mandyck of United Technologies tells host Steve Curwood that his company has developed a new technology that can cool shipping containers using C02 directly from the atmosphere.