Chemists discover a greenhouse gas that's 7,100 times worse than CO2

Scientists from the University of Toronto have discovered a human-made chemical lurking in the atmosphere that's an exceptionally long-lived greenhouse gas. Called perfluorotributylamine (PFTBA), it's a record-setting molecule that if left unchecked could have a profound impact on climate. » 12/12/13 11:10am 12/12/13 11:10am