"Over the last century, the intensive use of chemical fertilizers has saturated the Earth’s soils, waters, and atmosphere with nitrogen. Now scientists are warning that we must move quickly to revolutionize agricultural systems and greatly reduce the amount of nitrogen we put into the planet's ecosystems."

"The US has given up hope of reaching a global climate change treaty at Copenhagen and is working towards a deal late next year, the Obama administration said today. The decision ends hopes of a legally binding deal being sealed next month."

"Draining and burning of the world's peat bogs accounts for about 5.5 percent of global carbon emissions but are currently excluded from governments' climate targets and U.N. talks, a study found on Wednesday."

"Great Whites may be loners, but the ocean's most feared predators also hang out together between Mexico and Hawaii at a deep sea watering hole known as the 'White Shark Cafe,' a study released Wednesday reveals."

"German Chancellor Angela Merkel urged the United States Tuesday to agree to binding climate goals, telling U.S. lawmakers in a speech to Congress there was 'no time to lose' in the fight against global warming."

"The 2009 edition of the IUCN Red List of Threatened Species was released today, and the news isn't good: 17,291 species out of 47,677 assessed species, or 36 percent, are threatened with extinction."

"A consortium of Chinese and American companies announced a joint venture on Thursday to build a 600-megawatt wind farm in West Texas, using turbines made in China."

"President Obama's envoy for climate change has dashed hopes of a bilateral climate-change deal during next month's presidential trip to China. Todd Stern says a wide gap remains between Chinese and U.S. officials. China and the U.S. account for 40 percent of all greenhouse gas emissions."

"The latest mass escape from a British Columbia fish farm has led to renewed calls from the New Democratic Party to change how the farms are run."