Heh:
A leading skeptic of global-warming science is challenging celebrity activists such as Al Gore and Sheryl Crow to lower their "carbon footprint" to the same level as the average American by Earth Day in April 2008.
[...]
Mr. Gore says he pays a self-imposed "carbon tax" to offset the environmental impact of his large home and global travels.
[...]
Yesterday, the Web site thesmokinggun.com revealed that Miss Crow's tour caravan includes three tractor-trailer rigs, four buses and six cars.
Via Libertas
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