Reuters: Brazilian senator and former environment minister Marina Silva won Norway’s $100,000 Sophie Prize for her work to protect the Amazon rainforest, the prize foundation announced on Wednesday. The Sophie Prize is awarded annually for environmental protection and sustainable development. It was set up in 1997 by Norwegian author Jostein Gaarder and is named after the main character of his book "Sophie’s World." Silva, who was environment minister in 2003-2008, clamped down on …