International

"Radiation from the Fukushima nuclear disaster might have increased the rate of mutation in one species susceptible to environmental changes."

"The source of an enormous floating mass of pumice spotted this week in the South Pacific Ocean off the coast of New Zealand has been discovered: NASA satellite images and other sleuthing science have pinpointed an erupting undersea volcano called the Havre Seamount as the culprit."

"Sea ice in the Arctic is disappearing at a far greater rate than previously expected, according to data from the first purpose-built satellite launched to study the thickness of the Earth's polar caps."

"If you had to pick ground zero for climate change, you might pick the Sahel, the grasslands between the Sahara in the north and African tropical rainforests in the south. The region is immensely fertile—when it isn't being slammed by recurrent droughts and floods. Many human lives are suspended in a fragile balance with the volatile climate of this region."

"The United States will suffer a series of severe droughts in the next two decades, according to a new study published in the journal Nature Climate Change. Moreover, global warming will play an increasingly important role in their abundance and severity, claims Aiguo Dai, the study’s author."

"An El Nino weather pattern is underway and will last until winter, Japan said on Friday, foreshadowing disruptive conditions that could harm crops from Australia to India at a time of rising fears about global food supplies."

"A University of Michigan genetic analysis has found that the global trade in bullfrogs is a prime conduit for the chytrid fungus, which has been devastating amphibian populations around the world. The paper is being published in the journal Molecular Ecology."

"Lead radiation shields forced on workers at the stricken Fukushima No. 1 nuclear power plant to cover their dosimeters masked radiation readings by about 30 percent."

"RANJIT NAGAR, India -- When the United Nations wanted to help slow climate change, it established what seemed a sensible system. Greenhouse gases were rated based on their power to warm the atmosphere. The more dangerous the gas, the more that manufacturers in developing nations would be compensated as they reduced their emissions. But where the United Nations envisioned environmental reform, some manufacturers of gases used in air-conditioning and refrigeration saw a lucrative business opportunity."

"DA NANG, Vietnam -- In the tropical climate of central Vietnam, weeds and shrubs seem to grow everywhere -- except here."