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James Cameron, who proclaimed himself the “king of the world” upon winning three Oscars for his 1997 film Titanic , can now proclaim himself king of the underworld as well. On Monday the moviemaker became the first solo aquanaut to reach the deepest recess of the Mariana Trench , touching down at the Challenger Deep site about 11 kilometers below the surface of the Pacific Ocean.

James Cameron, who proclaimed himself the “king of the world” upon winning three Oscars for his 1997 film Titanic , can now proclaim himself king of the underworld as well. On Monday the moviemaker became the first solo aquanaut to reach the deepest recess of the Mariana Trench , touching down at the Challenger Deep site about 11 kilometers below the surface of the Pacific Ocean.

(PhysOrg.com) -- Sandia National Laboratories is using its Ion Beam Laboratory (IBL) to study how to rapidly evaluate the tougher advanced materials needed to build the next generation of nuclear reactors and extend the lives of current reactors.

(PhysOrg.com) -- Sandia National Laboratories is using its Ion Beam Laboratory (IBL) to study how to rapidly evaluate the tougher advanced materials needed to build the next generation of nuclear reactors and extend the lives of current reactors.

Could stress play a role in the development of Alzheimer’s? Right now we’re not sure, but this latest study shows that it may play a role, though exactly how? Well, we’re still not sure.

Could stress play a role in the development of Alzheimer’s? Right now we’re not sure, but this latest study shows that it may play a role, though exactly how?

By Ewen Callaway of Nature magazine The Vatican has abruptly cancelled a controversial stem-cell conference that was set to be attended by the Pope next month.

By Ewen Callaway of Nature magazine The Vatican has abruptly cancelled a controversial stem-cell conference that was set to be attended by the Pope next month.

By Nina Chestney LONDON (Reuters) - The world is close to reaching tipping points that will make it irreversibly hotter, making this decade critical in efforts to contain global warming, scientists warned on Monday. Scientific estimates differ but the world's temperature looks set to rise by six degrees Celsius by 2100 if greenhouse gas emissions are allowed to rise uncontrollably. As emissions grow, scientists say the world is close to reaching thresholds beyond which the effects on the global climate will be irreversible, such as the melting of polar ice sheets and loss of rainforests

By Nina Chestney LONDON (Reuters) - The world is close to reaching tipping points that will make it irreversibly hotter, making this decade critical in efforts to contain global warming, scientists warned on Monday. Scientific estimates differ but the world's temperature looks set to rise by six degrees Celsius by 2100 if greenhouse gas emissions are allowed to rise uncontrollably. As emissions grow, scientists say the world is close to reaching thresholds beyond which the effects on the global climate will be irreversible, such as the melting of polar ice sheets and loss of rainforests

When George Zimmerman saw Trayvon Martin walking down the street in Sanford, Florida, he quickly assumed that the Black, hoodie-clad teenager was carrying a weapon. He then pulled out his gun and fatally shot the young student, whose hands were gripping nothing more than a bag of Skittles. [More]

Nowadays, ever smaller and more powerful computer chips are in demand. German physicists have discovered a new physical attraction that accelerates this progress.

Nowadays, ever smaller and more powerful computer chips are in demand. German physicists have discovered a new physical attraction that accelerates this progress.

Charles R. Knight (1874 – 1953) is best known for his arresting paintings of dinosaurs and other long-vanished beasts

Charles R.