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As "Star Trek" marks its 45th anniversary, space exploration is less about the voyages of the starship Enterprise and more about robots that boldly go where no man has gone before. But surely even Lieutenant Commander Data would approve the slate of robotic missions looking out beyond Earth orbit toward extraterrestrial destinations both familiar and mysterious

Few things remain as mysterious--or controversial--as our own history as a species. [More]

In the second of three videos, we visit the central hub of New York City's 'Ring of Steel', the expansive camera network keeping watch over Lower Manhattan.

* Flooding persists in Pennsylvania, other states * Swollen Susquehanna River crests in city of Wilkes-Barre [More]

TOKYO (Reuters) - Radioactive material released into the sea in the Fukushima nuclear power plant crisis is more than triple the amount estimated by plant operator Tokyo Electric Power Co, Japanese researchers say. Japan's biggest utility estimated around 4,720 trillion becquerels of cesium-137 and iodine-131 was released into the Pacific Ocean between March 21 and April 30, but researchers at the Japan Atomic Energy Agency (JAEA) put the amount 15,000 trillion becquerels, or terabecquerels.

Though burning natural gas produces much less greenhouse gas emissions than burning coal, a new study indicates switching over coal-fired power plants to natural gas would have a negligible effect on the changing climate. Tom Wigley, a senior research associate at the National Center for Atmospheric Research, reports that if natural gas were substituted for coal in energy production, climate change trends would not slow down and may, in fact, accelerate. His findings are due to be published in the journal Climatic Change Letters

From building-blocking bollards to millimeter-wave scanners , the September 11 terrorist attacks have led to significant changes in security techniques and technology worldwide over the past decade to discourage future attacks and to avoid being surprised again. To meet these goals, law enforcement and counterterrorism operations worldwide have come to rely heavily on surveillance of public spaces. Nowhere is surveillance more pervasive in the U.S

Responding to Peter Brabeck-Letmathe's critique of organic food--that it's too expensive and downright dangerous--author and educator Anna Lappé says that he's wrong, and scared of an organic future.

The attacks of September 11, 2001, were a shocking and emotionally raw event that most adults, especially in the U.S., still have trouble comprehending . For children under 14, however, the events of that day are but a page of history, a modern-day Pearl Harbor. Now, with the 10th anniversary of these attacks upon us, psychologists, educators and parents are thinking again about how best to teach children about the traumatic day and its aftermath--as well as the complicated threat of terrorism .

The terrorist attacks that shook the United States 10 years ago had effects that reached all the way into space. Not only did the events of Sept. 11, 2001, prompt NASA to immediately beef up its already strict security procedures, they forced military space officials to reassess their priorities regarding space security and triggered a shift in space policy .

By Ewen Callaway of Nature magazine New descriptions of Australopithecus sediba fossils have added to debates about the species' place in the human lineage.

No shortage of articles have been published about the deep distrust exhibited by most 2012 Republican presidential candidates toward specific scientific findings--notably evolution and climate change--as well as in some cases toward science itself. [More]

* New station crew will not fly until problem found, fixed * Former commander says it is time to bring in the Chinese [More]

Thar’s gold in them thar hills--and we may have meteorites to thank. Because it appears that a rain of meteors nearly 4 billion years ago peppered the Earth’s exterior with precious metals