Clive Hamilton http://kalw.org en Today on Your Call: Is geo-engineering our last hope against global warming? http://kalw.org/post/today-your-call-geo-engineering-our-last-hope-against-global-warming <p></p><p></p><p> Thu, 09 May 2013 16:59:31 +0000 Ali Budner 26938 at http://kalw.org Today on Your Call: Is geo-engineering our last hope against global warming?