Why a hydrogen economy doesn't make sense

In a recent study, fuel cell expert Ulf Bossel explains that a hydrogen economy is a wasteful economy. The large amount of energy required to isolate hydrogen from natural compounds (water, natural gas, biomass), ...

Dec 11, 2006 feature
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For Better Nanowires, Just Add Diamond

Among the positive characteristics of diamond, such as its beauty and unsurpassed hardness, are less well known properties that make it a valuable material in the electronics industry. Now, according to two scientists at ...

Nov 15, 2006 feature
4.2 / 5 (435) 0

Prominent U.S. Physicists Send Letter to President Bush

Thirteen of the nation’s most prominent physicists have written a letter to President Bush, calling U.S. plans to reportedly use nuclear weapons against Iran “gravely irresponsible” and warning that such action would ...

Apr 17, 2006
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Quantum computer solves problem, without running

By combining quantum computation and quantum interrogation, scientists at the University of Illinois at Urbana-Champaign have found an exotic way of determining an answer to an algorithm – without ever running ...

Feb 22, 2006
4.4 / 5 (395) 0

Towards a new test of general relativity?

Scientists funded by the European Space Agency have measured the gravitational equivalent of a magnetic field for the first time in a laboratory. Under certain special conditions the effect is much larger than ...

Mar 23, 2006
4.8 / 5 (364) 1

Quantum secrets of photosynthesis revealed

Through photosynthesis, green plants and cyanobacteria are able to transfer sunlight energy to molecular reaction centers for conversion into chemical energy with nearly 100-percent efficiency. Speed is the ...

Apr 12, 2007
4.7 / 5 (344) 0

Researcher shows that black holes do not exist

Black holes have long captured the public imagination and been the subject of popular culture, from Star Trek to Hollywood. They are the ultimate unknown – the blackest and most dense objects in the universe ...

Sep 24, 2014
4 / 5 (376) 237

Traffic jam mystery solved by mathematicians

Mathematicians from the University of Exeter have solved the mystery of traffic jams by developing a model to show how major delays occur on our roads, with no apparent cause. Many traffic jams leave drivers ...

Dec 19, 2007
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