"You've heard of peak oil—the idea that the globe's easy-to-get-to petroleum reserves are largely cashed, and most of what's left is the hard stuff, buried in deep-sea deposits or tar sands. But what about peak phosphorus and potassium? ...These nutrients, which are essential for plants to grow, are extracted from soil every time we harvest crops, and have to be replaced if farmland is to remain productive."

"PAULSBORO, N.J. -- A freight train derailed Friday on a railroad bridge that has had problems before, toppling tanker cars partially into a creek and causing a leak of hazardous gas that was blamed for sickening dozens of people, authorities said."

"The Interior Department [Friday] proposed Endangered Species Act protection for the lesser prairie chicken, a grayish-brown grouse whose native grasslands and prairie habitat in Colorado, Kansas, New Mexico, Oklahoma and Texas has declined by about 84 percent."

"The Supreme Court may use an L.A. case to decide for the first time who can be held responsible for storm water runoff pollution."

"During the fall campaign, California's attention was focused on the presidential race and Gov. Jerry Brown's tax measure. But in a historic, largely overlooked environmental shift, the state's voters also triggered a multibillion-dollar tidal wave of new green spending."

Cornfields -- which occupy a big fraction of U.S. farmland -- differ from normal ecosystems in that they are nearly sterile ecologically. Breeding and spraying aim to prevent anything from living but corn.

"We'll start in a cornfield — we'll call it an Iowa cornfield in late summer — on a beautiful day. The corn is high. The air is shimmering. There's just one thing missing — and it's a big thing...

...a very big thing, but I won't tell you what, not yet.

"DOHA, Qatar -- 'Climate change is taking place before our eyes and will continue to do so as a result of the concentrations of greenhouse gases in the atmosphere, which have risen constantly and again reached new records,' said World Meteorological Organization Secretary-General Michel Jarraud."

"MIAMI -- Hurricane season 2012, which officially ends Saturday, will go down in hstory as the year of Superstorm Sandy, which carved a path of death and devastation from the Caribbean to the Jersey Shore."

"Scientifically speaking, it also was notable for something it was not: intense. For the third consecutive season, the tropics churned out what not long ago would rank as an abnormally large number of storms - yet curiously only one of 19 managed to reach Category 3 strength.

"Time is running out for Kiribati as the effects of climate change cause more people to lose their homes while the world procrastinates on the issue."

Shell Oil and federal regulators have been tight-lipped about a failed test of the energy giant's Arctic oil-spill equipment, currently under construction in Washington state. But a freedom-of-information request by KUOW reveals what went wrong beneath the surface of Puget Sound. [36]