This past week we heard of a report from the United Nations. The UN Secretary-General Ban Ki-moon said the report confirms that the effects of human-caused climate change are already widespread and consequential, affecting agriculture, human health, ecosystems on land and in the oceans, water supplies, and some industries. We take a closer look at this area and in particular, the cause and effect relationships. Is climate change truly the result of human action? Our guest provides a couple of examples of local or regional changes that can occur. Deforestation of a large area would have an effect, or another example is the grouping of people into one relatively small area. But what about "global" climate change? Is there a verifiable relationship between human-caused CO2 and climate change? Join us for an interesting discussion. Participants: Dr. E. Calvin Beisner, Dan Elmendorf