USA Today: Government officials from the United States and other nations are meeting this week as part of a search for ways to deliver energy that is cleaner and less expensive, and can help them meet the anti-pollution goals of the Paris Agreement. In kicking off meetings in San Francisco, the Obama administration announced commitments by the United States and 20 international partners to double funding for clean energy research and development, from $15 billion to $30 billion annually by the year 2021....