We must move to a carbon-free economy.
That means reduce or eliminate use of fossil fuels to limit damage in the future.
Alternative energy sources such as wind, solar, geothermal, and tidal are needed.
Increase forest cover.
Sequester (remove) carbon from the atmosphere.
If all excess carbon dioxide release stopped today, it is estimated that it would take hundreds of years for levels to return to normal (NASA, 2007).