Blue and Green: In just one year, ozone pollution in India caused the loss of enough crops to feed 94 million people that are living below the poverty line, according to a new study. Studying data from 2005, scientists concluded that in that year alone, ozone pollution killed 6 million tonnes of wheat, soybean and rice crops enough to have fed around a third of the countrys poor. Although ozone is essential in the upper levels of Earths atmosphere, at ground level it can be harmful. Ground level ozone is not...