Associated Press: Boston Mayor Marty Walsh is heading to China this week to talk about the challenge that climate change poses to urban areas. The Democrat will join a delegation that includes officials from 20 U.S. municipalities taking part in a low-carbon cities summit in Beijing on Tuesday and Wednesday. Walsh says Boston has made significant progress, but is always looking for other ways to better prepare for and adapt to the consequences of climate change. The summit is billed as an opportunity for officials...