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High-Altitude Wind Energy: Huge potential — and hurdles

A host of start-up companies are exploring ways to harness the enormous amount of wind energy flowing around the earth, especially at high altitudes. But as these innovators are discovering, the engineering and regulatory challenges of what is known as airborne wind power are daunting.

Shell war on Greenpeace

Royal Dutch Shell is taking Greenpeace International to court in an attempt to have it banned from holding any protest within 500 metres of Shell property or face a fine of $1.25 million.