Deep sea ‘gold rush’ moves closer to reality

Exploiting precious metals on the ocean floor is an idea that has been considered for decades.

A deep sea “gold rush” is a controversial new frontier for mining the ocean floor and it has moved a step closer to reality.  The United Nations has published its first plan for managing the extraction of so-called “nodules” – small mineral-rich rocks – from the seabed.

 

 

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Unmanned Remote-Control Aircraft Designed for Stormy Sea Rescues

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The marine rescue UAV prototype.

People often need to be rescued at sea because of stormy weather – exactly the kind of conditions in which it is not safe to fly. Nonetheless, fully-crewed helicopters and fixed-wing aircraft are regularly sent out into such weather to perform maritime rescues, endangering both the crew and the expensive aircraft themselves. Soon, however, a new type of unmanned remote-control aircraft may be able to do the job. Not only would flight crews be kept out of harm’s way, but as demonstrated by a functioning prototype, the aircraft would outperform conventional planes in rough weather, thanks to shape-shifting technology. (Pics)

 

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CSI Sharks: New Forensic Technique Gives Clues About Sharks from Bite Damage

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A tiger shark (Galeocerdo curvier) swims toward the camera as lemon sharks (negaprion brevirostris) eat behind her.

Hit-and-run attacks by sharks can be solved with a new technique that identifies the culprits by the unique chomp they put on their victims, according to a University of Florida researcher and shark expert.

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Are Jellyfish Changing The Ocean’s Temperature?

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Jellyfish mixing up the oceans’ waters

Talk about a “butterfly flaps its wings” scenario. Scientists Kakani Katija and John Dabiri of the California Institute of Technology in Pasadena have worked out just how jellyfish swim, and propose that the way jellyfish and other swimmers move through the water could have as big an impact on mixing up the oceans’ waters as tides and wind, which means they’re an important part of determining the temperatures of the seas.

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Could Alien Life Be Thriving On Saturn’s Frozen Moon?

Could There Be Alien Life Be Thriving On Saturn’s Frozen Moon?

 The surface of Saturn’s moon Enceladus shows evidence of ongoing geological activity 

Alien life could have evolved on one of Saturn’s moons, scientists say.

They have found evidence that seas may lie beneath the frozen surface of Enceladus  – the planet’s sixth biggest moon.
 

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Sea-Rise Levels By End Of Century May Be Lower Than Previously Predicited

Sea-Rise Levels By End Of Century May Be Lower Than Previously Predicited 

 Columbia Glacier is adding to ocean levels this century, the total global sea rise by 2100 may be lower than many are anticipating.

Despite projections by some scientists of global seas rising by 20 feet or more by the end of this century as a result of warming, a new University of Colorado at Boulder study concludes that global sea rise of much more than 6 feet is a near physical impossibility.

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