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To test this idea, Dr Hebets turned to her make-up bag and brought out two shades of nail varnish (NailSlicks, midnight metal and bronze ice, as her paper in the Proceedings of the National Academy of Sciences quite properly describes in its materials and methods section, in case any other researcher wishes to replicate the experiment).

ECONOMIST: Female spiders are picky lovers

In addition to findings of lower ice volumes in Autumn and Winter, a new paper from researchers at the University of Washington has confirmed that Arctic ice melts during the summer is also accelerating.

FORBES: Move up http://i.forbesimg.com t Move down

Think of all the energy expended in pumping that water, treating it, spraying it on crops, heating it for your shower, making it into ice, Coca-Cola, paper, and on and on.

FORBES: To Conserve Energy - Conserve Water