P463 Teletext 463 May24 16:01:11      ISSUES   —————————————————————————————  —— SUPERSONIC STORMS   Each year, many of us take off for a sun-drenched beach holiday, and chances are we'll fly there. Globally, the number of flights is increasing all the time, with an estimated two TRILLION passenger kilometres flown each year. But now it appears there's a price to pay. According to the New Scientist journal those flights are probably damaging the ozone layer. ——————————————————————————————————1/5—— Fun & Games index 450  TALKING 'BOUT MY GENERATOR p440 What's on Action Index Consumer
P463 Teletext 463 May24 16:00:01      ISSUES   —————————————————————————————  —— SUPERSONIC STORMS   Aeroplanes dart in and out of the stratosphere, which starts somewhere between 18,000 and 50,000ft, depending on the latitude. Most planes cruise at an altitude of around 35,000ft, apart from Concorde which flys at about 60,000ft. The damage to the Ozone is created by the amount of fuel burnt in the stratosphere — about 40% is burnt here. But in some areas it can rise to 75%. ——————————————————————————————————2/$—— Fun & Games index 450  PARENT AND CHILD p483 What's on Action Index Conspldr
P463 Teletext 463 May24 16:03:00      ISSUES   —————————————————————————————  —— SUPERSONIC STORMS   Burnt aviation fuel creates clouds of water vapour and nitric acid (nitrogen oxides) which play a key part in the destruction of ozone. Two xfars ago, the American space agency NASA estimated that about a quarter of nitrogen oxides in the stratosphere came from aeroplanes. 80 million tonnes of water vapour are discharged into the stratosphere every year. ——————————————————————————————————3/5—— Patric Walker's Stars 356 ENVIRONMENTAL EVENTS AND TV p464 What's on Action Index Consumer
P463 Teletext 463 May24 16:00:01      ISSUES   —————————————————————————————  —— SUPERSONIC STORMS   Most aircraft are flown in the stratosphere to speed up the journey and avoid bad weather. To protect Ozone, flights would have to be restricted to certain altitudes. Flying below 35,000ft would reduce emissions by 10%  and below 31,000ft would  reduce emissions by 40%.   ——————————————————————————————————4/5—— Go Green index 460 MAKE YOUR OWN COMPOST p465 What's on Action Index Consuler
P463 Teletext 463 May24 16:00:00      ISSUES   —————————————————————————————  —— SUPERSONIC STORMS   Robert Elgi, a consultant in atmospheric chemistry in Switzerland, beli—ves that aircraft emissions could cause greenhouse gases. He says international taxes on aircraft fuel should be imposed to slow down the growth of air travel.   "And then all air   travel in the   stratosphere should   be banned."   ——————————————————————————————————5/5—— Fun & Games index 450  TALKING 'BOUT MY GENERATOR p440 What's on Action Index Conspldr