Mashable: Solving human-caused global warming requires cooperation between the countries responsible for the majority of global warming to-date, such as the United States, and the fast-growing nations representing the emissions of tomorrow, such as India.
It also demands cutting both the gases that warm the planet in the long-term, such as carbon dioxide, and those that act during the timespan of a decade or more, such as methane and hydrofluorocarbons, or HFCs.
On Tuesday, President Barack Obama and...