Guardian: Barack Obama should set drastic targets to force the US to switch to renewable energy in an effort to slow down climate change, according to the former vice president Al Gore. Gore said that one of Obama’s first acts as US president should be to demand a move to 100% renewable energy within 10 years. “We can do that,” he said during the Web 2.0 Summit in San Francisco last Friday. “The declaration from President [John F] Kennedy that we would land a man on the moon and bring him back …