Wildflowers at risk from ‘safe’ levels of pollution

Posted by Washington Post: Juliet Eilperin on February 11th, 2013
Ecologist: Over the last 100 years the global population has increased four-fold to seven billion people and may reach nine billion by 2075. How to produce enough food to feed all these people is one of the biggest global challenges. Throughout the twentieth and early twenty-first century, food production has been dramatically increased by improving agricultural yields, particularly by applying nitrogen fertilisers. In 1908, the German chemist Fritz Haber invented a method for producing ammonia fertilizer......

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