Greenpeace protesters climb up the Shard, the tallest building in Western Europe, on Thursday, July 11, 2013, in London during a protest against drilling in the Arctic by Royal Dutch Shell. (AP Photo/Sang Tan)

Photo by: Sang Tan

Greenpeace protesters climb up the Shard, the tallest building in Western Europe, on Thursday, July 11, 2013, in London during a protest against drilling in the Arctic by Royal Dutch Shell. (AP Photo/Sang Tan)