The big oil companies were some of the first multinationals to find themselves in the environmental "hall of shame" on Friday in the run up to next week's World Summit on Sustainable Development...Friends of the Earth singled out Shell, British Petroleum (BP) and ExxonMobil for accusations that they had played up green credentials but fell short of their much-publicised environmentally friendly ideals...The "Green Oscars" were awarded by FoE to companies that had produced the most "greenwash" since the Rio Earth summit in 1992. It ranked among the best theatrical performances those by oil companies and the biotech companies Monsanto, Novartis and Aventis. Sasol, the South African fuels company, and Eskom, the local state-owned power group, also received "honourable" mentions.