His serious aviation habit means he is hardly the best person to lecture others on the environment. But John Travolta went ahead and did it anyway. The 53-year-old actor, a passionate pilot, encouraged his fans to "do their bit" to tackle global warming. But although he readily admitted: "I fly jets", he failed to mention he actually owns five, along with his own private runway. Clocking up at least 30,000 flying miles in the past 12 months means he has produced an estimated 800 tons of carbon emissions nearly 100 times the average Briton's tally With five private jets, Travolta still lectures on global warming| Showbiz | This is London I find it frequently amusing the number of people especially those in the media and celebrities that often tout the benefits of living the green lifestyle and how Americans should sacrifice to offset global warming and condemn oil companies and yet at the same time do not walk the walk. Take Mr. Travolta who flys a commercial aircraft for his private plane and one that is not noted for fuel economy or being environmentially friendly by any stretch of the immagination. However this does not stop Mr. Travolta from using this aircraft to travel and lecture others on Global Warming.