McClatchy Newspapers: The Senate Thursday defeated 53-47 an effort to limit the Environmental Protection Agency’s authority to regulate greenhouse gas emissions, and President Barack Obama said the vote was a reminder of the need to pass more comprehensive climate change legislation. Alaska Republican Sen. Lisa Murkowski’s measure was backed by six Democrats and all 41 Republicans. Had Congress passed it, the White House said earlier this week that Obama would have vetoed it anyway, adding that the …