Below are all of the URLs with the requested keyword, in the timeframe requested. This number will differ from the total article count in the confluence report, because this report shows all headlines containing a single keyword, but a single headline may have confluences on multiple keywords.
From abcnews.go.com
From rss.cnn.com
From www.cbsnews.com
From www.foxnews.com
Al Gore says climate change can ?bring about the end of civilization? during talk in Atlanta: report
RNC assails Bernie Sanders over report he called for nationalization of major US industries in 1970s