Alan Weisman : The first thing to understand about the current situation is that it has nothing whatsoever to do with a lack of oil or gas. We have to cut greenhouse gases to stay on safe side of a 2-degree Celsius limit , he says . Weisman says the fastest and easiest way to limit carbon emissions is population control . Weisman : We need to educate women and give them access to contraception .
Alan Weisman : In the next 12 years , world is expected to add another billion people . We have to cut greenhouse gases to stay on safe side of a 2-degree Celsius limit , he says . Weisman says the fastest and easiest way to limit carbon emissions is population control . Weisman : We need to educate women and give them access to contraception .