At TED2010, Bill Gates unveils his vision for the world’s energy future, describing the need for “miracles” to avoid planetary catastrophe and explaining why he’s backing a dramatically different type of nuclear reactor. The necessary goal? Zero carbon emissions globally by 2050.

One of the key formulas to decrease the amount of CO2 is the following. (Picture taken from the talk @TED)

The key factor to get this equation to zero is the last one as Bill Gates explains in his talk.

He talks about a new kind of energy production called terrapower which basically is a nuclear reactor that runs primarily on depleted uranium.