Left-right climate group quietly weighing proposals for carbon tax
Stanford's George Shultz on energy: It's personal
Time for U.S. to tax carbon emissions
Carbon Tax or Cap And Trade? Whichever Leaves Less Room For Politics And Corruption
2012 First Half Was Hottest Yet in U.S.
4 key reasons why BC’s carbon tax is working
Hey, look, a Republican who cares about climate change!
Ex-GOP lawmaker says conservatives must end ‘denial’ on climate
Inglis Urges Conservatives to End Climate Science “Denial,” Embrace “Free Enterprise” Solutions (The Hill)