Global Warming Lawsuit

Roger Revelle is the grandfather of global warming theory. Shortly before his death, he co-authored an article which downplays the certainty and severity of the greenhouse effect. A former student claims that Revelle was coerced for political reasons into lending his name to the article. Co-author Fred Singer is suing for libel. He claims the article is an accurate reflection of Revelle’s ideas. David Baron from member station WBUR reports.