Presentation on theme: "To spray or not to spray? Presented by Rita Pakalniskyte"— Presentation transcript:
1 To spray or not to spray? Presented by Rita Pakalniskyte Marie-Helene PechMarcin OtorowskiIris MüllerAnne-Laure Mairesse
2 Case background DDT – Dichloro – Diphenyl - Trichloroethane DDT as a way of preventing malariaMalaria facts:2-3 million deaths annualy350 – 500 million people affectedEconomic loss (1/2 billion dollars per year)Threat of 40% world populationMostly affect poor, developing countriesSince 1939 DDT is commonly used for fighting against malaria
3 Environment vs human life The problemLong half-life length (up to 15 years),Bio-accumulates in human body and environment,Passed from mother to infants during breast feedingNo one ever died from sprayed DDTNo proofs that it cannot lead to death nor environment pollution (asbestos example).UNO considers banning usage of DDT -> less polluted environment but higher amount of malaria infections.Environment vs human life
4 Principal values for decision Human health and lifeNatural environmentFinancingPossible optionsApprove the banKeep using DDTOther options?
5 Why to use, why not to use DDT? Efficient and cheap way of defeating malariaSpread of malariaEconomy profitIf banned, many people will dieNo sure anything better will come upLimited use, indoor useNo risk-fee technologyUnknown effect on human health and environmentIrreversible to the natureHuge risk takenBut still, there is a riskWhat risk can we afford?
6 The choiceMarie:„We should not ban DDT. It can save many people. I am aware of risk, but the benefits are definitely worth it”„We should ban DDT. We can’t afford such a high risk, and be responsible for its effects”Marcin:
7 Two methods of making this decision Risk / Benefit analysisBenefits > RisksApprovalPrecautionary principleRisk = 0Approval
8 Risk/benefits analysis vs precautionary principle Risk / benefit analysisPrecautionary principleYou must prove the potential benefit is valuable enough to take some risk connected.You must prove it is completely safe to introduce particular technologyFocuses on proper management of the riskFocuses on eliminating the riskWith precautionary principle, there wouldn’t be such invention like cellular phones, nuclear power plants etc.With precautionary principle, there wouldn’t be ozone depletion, harmful effects of asbestos and haloalkanes etc.
9 The decision Awareness of difficulty of choice Complex issue Choosing less evil solutionEthical and moral problemConsequencesOur solution – to limit usage of DDT