Attorney Steve Susman is launching a law suit against Exxon Mobil and 23 other energy companies, alleging that they funded 'false science' along with a massive public relations and propaganda campaign designed to mislead the public about the dangers of global warming.

It is "one of the largest conspiracies in the world," alleges Susman.

As a former defence lawyer for tobacco giant Phillip Morris, Susman is an expert on large corporations. But he has now switched sides, joining Native rights lawyer Heather Kendall Miller and the Native American villagers of Kivalina in Alaska to prove that the disappearance of their village into the sea is man-made - and that the energy giants are to blame.

This episode of People & Power airs from Wednesday, May 27, 2009, at the following times GMT: Wednesday: 0600, 1230, Thursday: 0130, 1400, 1930; Friday: 0630, 1630; Saturday: 0330, 2030; Sunday: 0030, 0530; Monday: 0830.