Here is the final part of the Oreskes and Dr Karl piece. It's not quite as racy as the last one, but you can hear Oreskes condemn those who doubt global warming and almost in the same breath belittle any comparison of global warming to religion. Hear her tell us that under global warming, some places will get warmer, some cooler, some wetter and some dryer. And you will hear Dr Karl say that ocean levels have risen by 20cm in the last century.