The northern U.S. is getting a blast of unseasonably cold weather, thanks to what has been dubbed a "bomb cyclone." <em>The Washington Post</em>'s Jason Samenow explains that and other odd weather terms.
Scientists say a new deal between the U.S. and China on greenhouse gases is a positive move toward new models for controlling emissions, but that it won't keep the Earth from dangerous levels of warming.
<em>The New England Journal of Medicine</em> published an editorial against quarantining people who have worked with Ebola patients in Africa. Renee Montagne speaks with Dr. Lindsey Baden, one of the authors.