The Tulane University (New Orleans, US) has announced the next phase of the their 'Tulane Nitrogen Reduction Challenge', an international competition that will award $1 million to the entrepeneur, researcher or inventor with the best plan to reduce the amount of nutrients entering the world's lakes, rivers and oceans through storm water runoff and ultimately reduce the hypoxic zone in the Gulf of Mexico.
For more information, go to the Tulane website.