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Scientists Discover Super Greenhouse Gas

Scientists say they have discovered a man-made greenhouse gas 7,100 times as strong as carbon dioxide. More bad news: It has a lifetime of hundreds of years. Researchers at the University of Toronto in Canada say the chemical – perfluorotributylamine (PFTBA) – is the most radiatively efficient chemical found to date, breaking all other chemical records for its potential to impact climate. According to Angela Hong, who worked on the project, "radiative efficiency" describes...

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