The sun was barely up we had woken early to watch the sandbar disappear as the tide rose and now my wife Eleanor and I were relaxing in the warm salty water, eating juicy South Carolina peaches, soaking in the moment, enjoying our children and each other.

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But in Norway, one company is also turning to salty water.

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That means more melting ice in the Arctic, dumping fresh water into the salty sea and making a mess of the all-important Gulf jet stream, which makes northern U.S. habitable.

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The scientists said the locale was almost certainly a primordial lake bed, rich in clay minerals, where the water many eons ago wasn't too salty or alkaline for life to thrive.

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In Yellowknife Bay, the area where the rover is located, it appears "slightly salty liquid water" was once there, said Michael Meyer, lead scientist for the Mars Exploration Program at NASA Headquarters in Washington.

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Their water source at the mouth of the Murray River, in South Australia, has turned salty.

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Dr Vollrath, for example, suggests that Crassicorophium silk's tolerance of salt water means it might find uses in medical applications where it would come into contact with salty bodily fluids.

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The sea ice expanded during Southern Hemisphere autumn and winter in response to the development of a fresh, cool surface water layer, which floated on the denser, warmer salty sea water below.

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