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Scientists puzzle over Pluto’s polygons

NEW YORK (Reuters) - New pictures relayed by the first spacecraft to visit distant Pluto show odd polygon-shaped features and smooth hills in an crater-free plain, indications that the icy world is geologically active, New Horizons scientists said on F...
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Designers build spiral staircase to the treetops

People of all ages could soon be able to climb to the tops of trees thanks to two design graduates from London's Royal College of Art (RCA). They've created a novel modular step system that is attached to the trunk of a tree to form a spiral staircase,...
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