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Available for over a year
Sea lions in California are developing cancer and the most likely cause is pollution in the ocean. As world population grows and demands on agriculture increase, can we control the amount of damaging chemicals entering rivers and then being taken into the sea? Many of these agricultural and industrial chemicals are long lasting and highly toxic and, although officially banned, substances like DDT and PCBs are still in use in some areas. As pressure grows to control diseases in order to feed a growing world, solutions have to be found to stop these harmful chemicals damaging wildlife. Monty Don explores the problems of keeping our coastal waters free of toxins. Can we grow food and control disease while still protecting wildlife?
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