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Poachers make 2012 a deadly year for Africa's rhinos, elephants

Poachers make 2012 a deadly year for Africa's rhinos, elephants | The Glory of the Garden | Scoop.it

JOHANNESBURG, Dec 27 (Reuters) - Africa's biggest animals were poached in near record numbers in 2012, with surging demand for horn and ivory from Asia driving the slaughter of rhinos and elephants.

 

By mid-December, poachers had killed 633 rhinos in South Africa, according to environment ministry figures.

 

That marks a new annual peak in the country that is home to most of the continent's rhinos, and a sharp rise from the record 448 poached last year and the mere handful of deaths recorded a decade ago.

 

Elsewhere in Africa, the slaughter of elephants continued unabated, with mass killings reported in Cameroon and Democratic Republic of Congo.

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Fertilizer use responsible for increase in nitrous oxide in atmosphere

Fertilizer use responsible for increase in nitrous oxide in atmosphere | The Glory of the Garden | Scoop.it

"The new study, reported in the April issue of the journal Nature Geoscience, uses nitrogen isotope data to identify the unmistakable fingerprint of fertilizer use in archived air samples from Antarctica and Tasmania. Our study is the first to show empirically from the data at hand alone that the nitrogen isotope ratio in the atmosphere and how it has changed over time is a fingerprint of fertilizer use," said study leader Kristie Boering, a UC Berkeley professor of chemistry and of earth and planetary science."

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