Study says another greenhouse gas is far more dangerous than CO2

Scientists in Canada say they have found that a seldom-mentioned greenhouse gas, which has been present in the atmosphere for decades, has far more potential than CO2 to warm the Earth.

The substance – called perfluorotributylamine, or PFTBA – "is the most radiatively efficient chemical found to date, breaking all other chemical records for its potential to impact climate," scientists at the University of Toronto said in a news release about their recent study.