A story in the Sunday Times of London sent Google’s public relations machine into an advanced search for answers. The Times reporters wrote about a new Harvard study that examines the energy impact of Web searches. The story’s lead paragraph: “Performing two Google searches from a desktop computer can generate about the same amount of carbon dioxide as boiling a kettle for a cup of tea, according to new research.” One problem: the study’s author, Harvard University physicist Alex Wissner-Gross, says he never mentions Google in the study.