Bloomberg: President Barack Obama's historic trip to the rapidly warming Alaskan Arctic could help put pressure on international negotiators to successfully ink a global deal to fight climate change at a year-end summit in Paris. Urgency has been a theme of the three-day trip: The Arctic is warming twice as fast as the rest of the world. Obama said it's clear that climate is changing faster than our efforts to address it. With less than three months before the Paris summit begins, there is such a thing...