Bill Gates: Vaccines Could Help Reduce Global Population to Combat Rising CO2 Levels

Bill Gates: "Until we get [CO2] near to zero, the temperature will continue to rise."

"Probably one of these numbers is going to have to get pretty near to zero."

"First we've got population. The world today has 6.8 billion people. That's headed up to about 9 billion. Now, if we do a really great job on new vaccines, healthcare, reproductive health services, we could lower that by perhaps 10 or 15%."