Al Gore claims 8.6m viewed 24 Hours of Reality though the real figure was 17,000 | Mail Online

Despite Gore successfully getting speakers including Renee Zellweger to make appearances, website 'Watts Up With That?' has revealed that internet viewing figures were way below those reported by Gore.

Using web traffic information to estimate visitor numbers, the website said that even 17,000 viewers was possibly generous.

Video highlights of the talks posted on YouTube have also proved to be popular, with some films receiving just one or two views.