David Attenborough pays no attention to the polls

The Green Screen | Popular Science

In conversation, Attenborough's optimism about the current state of human interest in climate issues can seem at times naive: "In the last five or 10 years global warming has become incontrovertible," he says, seemingly unaware of the huge numbers of people who continue to believe it quite controvertible. "We have to work harder to convince people; over the years your country has changed its view," he says, glossing over the U.S.'s still tenuous relationship with the subject.