In this episode of TN we're looking at pesticides, strong poisons that are sprayed in ever-increasing amounts - literally millions of tonnes annually - over the food we eat, the grass we walk and play on, and even - if we follow the lead of actors pretending to be gardeners or proud home-owners - on the driveways we park our cars on. Poisons that - despite friendly reassurances from the chemical industry that 'If used correctly, pesticides should not pose a risk to the health of people' kill far more than the 'weeds' or insect 'pests' that they supposedly target and are soaking into every part of our environment: perhaps the best known example of this is the cocktail of chemicals found in the body fat of Arctic Polar bears more than a decade ago. We speak to Dave Goulson, Professor Of Biology (Evolution, Behaviour and Environment) at University of Sussex. And also Nick Mole, Policy Officer Pesticide Action Network UK