GOP presidential hopefuls dance around climate change

By Brad Knickerbocker, Staff writer / June 19, 2011

There was a time when Republicans were at the forefront of efforts to investigate – maybe even do something about – the impact of human activity on global climate.

John McCain was an early and persistent supporter of cap-and-trade efforts to reduce the greenhouse gases (mainly carbon dioxide) associated with climate change. So was Newt Gingrich, who went on to make a YouTube video ad – with then-House Speaker Nancy Pelosi, no less – where he said, “Our country must take action to address climate change.â€