I saw two very interesting television programmes recently. The first was 'Tropic of Cancer', a travelogue presented by Simon Reeve. He followed the imaginary geographic line of the Tropic of Cancer around the world, visiting various countries and meeting the people there. He started in Mexico and went from there to the Bahamas, before crossing to the African continent and visiting the Sahara and travelling from there to Libya. He then proceeded to travel through Egypt, Saudi Arabia, Oman, India, Bangladesh, Burma, Laos, Vietnam, Taiwan before finishing in Hawaii. There were so many issues arising from the programme- social problems, poverty, ecological and environmental problems. Most shocking was the moment when, at the end of the programme, Reeve visited a beach in Hawaii which was utterly polluted with litter and rubbish that had been washed up from the Pacific. Most of the litter was plastic, as plastic does not degrade but simply breaks up into smaller and smaller pieces