Drought lowering Mississippi River levels again, disrupting shipping; plus, carbon dioxide in atmosphere reaches new high

Water levels on the Mississippi and lower Ohio Rivers are dropping again, threatening barge traffic and commerce as drought conditions persist with little sign of relief in the coming weeks. Also, the World Meteorological Organization blamed the increasing carbon dioxide emissions on human activity, a rise in wildfires and a reduction in carbon sinks. Learn more about your ad choices. Visit podcastchoices.com/adchoices