Asia turns off lights for Earth Hour

Australia's Sydney Harbour Bridge and Opera House were plunged into darkness on Saturday for the annual Earth Hour campaign, leading a global effort to raise awareness about climate change.

Reforestation efforts reshape Hawaii's soil hydrology

Starting with the arrival of Polynesian settlers in the fourth century, and peaking in the mid-1800s, the destructive forces of wildfires and pests and the grazing of feral pigs, goats, and cattle reduced the native forests ...

North American rivers are a sizable source of atmospheric carbon

To fulfill the need for an ever more accurate and complete understanding of the flow of carbon through the Earth system, a flurry of research has taken place in the past decade on previously overlooked aspects of the carbon ...

Improving plume forecasts using Fukushima data

Forecasting how plumes of particles, such as radioactive particles from a nuclear disaster, will be transported and dispersed in the atmosphere is an important but computationally challenging task. During the Fukushima nuclear ...

Facebook sets engineers to work on grown-up search

(PhysOrg.com) -- Facebook is planning to get serious about its search engine. Sources tipped off reporters this week about Facebook plans to upgrade its search engine and run toward the money that can be gained from optimized ...

Declining sea ice to lead to cloudier Arctic: study

Arctic sea ice has been declining over the past several decades as global climate has warmed. In fact, sea ice has declined more quickly than many models predicted, indicating that climate models may not be correctly representing ...

Regional models expect drier, stormier western United States

As American southwestern states struggle against ongoing drought, and the Northwest braces for a projected shift from a snow- to a rain-dominated hydrological system, climate researchers strive to provide precipitation projections ...

Space the latest frontier for Earth Hour

Millions of people are expected to switch off their lights for Earth Hour Saturday in a global effort to raise awareness about climate change that will even be monitored from space.

Groupon says 4th-quarter was weaker than reported

(AP) -- Groupon Inc. said Friday that its fourth-quarter loss was wider than initially reported because it needed to increase the amount of money it sets aside for refunds.

China punishes social media, websites on coup talk

(AP) -- China is shuttering more than a dozen websites, penalizing two popular social media sites and detaining six people for circulating rumors of a coup that rattled Beijing in the midst of its worst high-level political ...

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