LiveScience: In terms of sheer quantity, carbon dioxide is the main contributor to global warming, but there are some lesser-known gases that also jeopardize the Earth's climate future. This list includes methane, nitrous oxide, chlorofluorocarbons (CFCs), hydrofluorocarbons (HFCs) and several others. These gases may make up a small percentage of the emissions society generates, but they pack a devastating punch when released.
The threat level for each of these gases varies based on several factors, most notably...