With pesticide contamination in soft drinks proving a major issue in India, American scientists at the John Hopkins University claim to have developed a new approach to clean up organohalides, a class of compounds used in pesticides that pollute groundwater. This method combines an extremely thin film of titanium dioxide with a compound found in life known as hemin. After exposure to ultra violet light, the hemin and titanium dioxide can break up organohalides at surprisingly high rates.