"STOCKHOLM -- President Obama is now in St. Petersburg, Russia at the G20 economic meeting, but he woke up this morning in Stockholm, where he agreed with Nordic leaders to cooperate on international climate negotiations and clean energy. ..."

"BRUSSELS — Seeking to end years of acrimony, the European Union has made concessions to the United States to try to gain support for global rules on airline emissions."

"ENEKO ISLAND, Marshall Islands -- Pacific Island leaders today declared that 'climate change has arrived' and called for an urgent phase down of greenhouse gas emissions to save their low-lying homelands from destruction."

"LONDON/PARIS -- A corrosive drilling fluid that triggered the North Sea's worst gas leak in 20 years could threaten similar deep-sea wells across the world, and operator Total has already warned Shell that its nearby Shearwater field may be at risk."

"The World Bank said on Tuesday it was planning 'aggressive action' to help developing nations cut emissions of soot and other air pollutants blamed for causing climate change, in a shift also meant to protect human health and aid crop growth."

"NARAHA, Japan -- In this small farming town in the evacuation zone surrounding the stricken Fukushima Daiichi nuclear power plant, small armies of workers in surgical masks and rubber gloves are busily scraping off radioactive topsoil in a desperate attempt to fulfill the central government’s vow one day to allow most of Japan’s 83,000 evacuees to return. Yet, every time it rains, more radioactive contamination cascades down the forested hillsides along the rugged coast."

"Glaciers in the Alps of Europe pose a scientific mystery. They started melting rapidly back in the 1860s. In a span of about 50 years, some of the biggest glaciers had retreated more than half a mile."

"The human genome codes for approximately 23,000 genes, yet some experts have suggested that the total information coded by the human genome alone is not enough to carry out all of the body’s biological functions. A growing number of studies suggest that part of what determines how the human body functions may be not only our own genes, but also the genes of the trillions of microorganisms that reside on and in our bodies."

"Japan pledged nearly $500 million to contain leaks and decontaminate radioactive water from the tsunami-crippled Fukushima nuclear plant, as the government stepped up its intervention in the worst atomic disaster in a quarter century."

"The world's oceans are turning acidic at what's likely the fastest pace in 300 million years. Scientists tend to think this is a troubling development. But just how worried should we be, exactly?"