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Sunday, 25 January 2015

Fertilizer

In agrarian times, pigeon poop was often was used as a dowry because it served as good fertilizer.

An estimated 300,000 mummified cats were found at Beni Hassan, Egypt in the late 19th century. They were sold at $18.43 per ton, and shipped to England to be ground up and used for fertilizer.

Run off from fertilizers is creating vast “dead zones” in the ocean which have no fish, a 2004 UN report warned . Five areas off Britain are among nearly 150 globally which have been starved of oxygen because of pollution from nitrogen-based fertilisers. The number of dead zones doubled between 1990 and the year of the report.

The use of commercial fertilizers has increased steadily in the last 50 years, rising almost 20-fold to the current rate of 100 million tonnes of nitrogen per year.

Source Daily Mail

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