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Scientists study the movement of charge carriers to design an organic LED that is energy efficient and still casts a warm, natural glow.

Scientists study the movement of charge carriers to design an organic LED that is energy efficient and still casts a warm, natural glow.

By Steve Scherer and Gabriele Pileri GIGLIO, Italy, Jan 20 (Reuters) - The vast wreck of the cruise ship Costa Concordia shifted on its undersea ledge on Friday, forcing a new suspension of rescue work and threatening plans to pump oil out to prevent environmental disaster. Firefighters' spokesman Luca Cari said rescue squads would be discussing the next step after the movement made conditions unsafe for divers already hampered by poor visibility, floating objects and underwater debris.

Light and electric current can both be used for computing, albeit with key differences. Whereas conventional computers do logic through the movement of electrons, newer and faster computers called quantum computers perform the same job using single particles of light, known as photons.

Occupy Wall Street is meant to be a leaderless movement. But that hasn't stopped some people from trying to identify leaders.

Students are a big contingent at Zucotti Park and other occupations.

If ever Americans were up for a bit of class warfare, now would seem to be the time. The current financial downturn has led to a $700 billion tax-payer-financed bank bailout and an unemployment rate stuck stubbornly above nine percent. Onto this scene has stepped the Occupy Wall Street (OWS) movement, which seeks to bring together a disparate group of protesters united in their belief that the current income distribution is unfair.

Frustration, doubt, chaos, and failures dominated the early days of Occupy Wall Street. So how has it lasted so long, grown, and spread around the country?

Today's wireless-sensor networks can do everything from supervising factory machinery to tracking environmental pollution to measuring the movement of buildings and bridges. Working together, distributed sensors can monitor activity along an oil pipeline or throughout a forest, keeping track of multiple variables at a time.

A three-year, government-funded effort to track the movement of greenhouse gases throughout the atmosphere has yielded surprising results that could help improve the accuracy of climate models. Researchers used a specially equipped plane for a series of pole-to-pole flights to measure the concentrations of greenhouse gases and black carbon particles at different altitudes, different locations and different times of the year

Help marine biologists track the movement and location of jellyfish and other unusual marine life [More]

The Australia-based Galileo Movement touts a series of "basic facts" on carbon dioxide that attempt to explain why the greenhouse gas can't contribute to climate change. John Smeed, the movement's co-founder, says the case against carbon dioxide as a global warming culprit is simply a matter of "junior school physics." [More]

Nuclear fission powers the movement of Earth's continents and crust, a consortium of physicists and other scientists is now reporting, confirming long-standing thinking on this topic. Using neutrino detectors in Japan and Italy--the Kamioka Liquid-Scintillator Antineutrino Detector (KamLAND) and the Borexino Detector--the scientists arrived at their conclusion by measuring the flow of the antithesis of these neutral particles as they emanate from our planet. Their results are detailed July 17 in Nature Geoscience .

By Ewen Callaway An experimental gene-therapy treatment for Parkinson's disease has eased the movement problems of a small number of patients and raised no major safety concerns.