Given that the emerald ash borer is only kept at bay at temperatures of 30 below, experts are seeking ways to save Minnesota's northern forest as the climate changes.
Leaders from St. Paul and other cities around the country gathered in Washington, D.C. to discuss the role cities should play in global climate change efforts.
Eight years ago, Minnesota leaders were out front in calling for more renewable energy and trying to reduce greenhouse gas emissions that contribute to climate change. Lately, that push has faltered.
Bigger storms are making culverts and other infrastructure inadequate, as Duluth learned in June 2012. Now, cities are taking steps to deal with more rain.