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Oxygen, phosphorous and early life on Earth
Two billion years ago the Earth system was recovering from perhaps the single-most profound modification of its surface environments: the oxygenation of the atmosphere and oceans. This led to a seri ... more
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Spanish scientists are designing a robot for inspecting tunnels
Currently, maintenance and safety inspection of tunnels used for vehicular traffic is carried out by direct in situ observation. This process, which is slow and requires intensive labor, requires th ... more
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A Superconductor-Surrogate Earns Its Stripes
Understanding superconductivity - whereby certain materials can conduct electricity without any loss of energy - has proved to be one of the most persistent problems in modern physics. Scientists ha ... more
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Billionaire eyes private Mars mission in 2017
Billionaire Dennis Tito has revealed his scheme for dispatching two astronauts to the red planet as early as December 2017, saying that 'rare alignments' of planets should be exploited as the contex ... more
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