MRCTV's Dan Joseph decided to ask bystanders near the Lincoln Memorial in Washington D.C. what is a bigger threat to humanity: global warming or nuclear weapons and other weapons of mass destruction? - See more at: http://www.cnsnews.com/mrctv-blog/matt-vespa/global-warming-bigger-threat-wmds-some-say-yes#sthash.THWv2ayx.dpuf
