Reuters: The United States gathered China, India and the world’s other top greenhouse gas polluters in Washington on Monday to “make up for lost time” and lay the groundwork for a U.N. deal to fight climate change. The meeting, which U.S. President Barack Obama called last month, groups countries that produce about 75 percent of the world’s greenhouse gas emissions to find ways to help seal a global warming pact this year. “The United States is fully engaged and ready to lead and …