Climate Change Creating Vicious Cycle in Western Forests

Climate change in the US west is creating a vicious cycle.

Maybe you've heard that insects are chewing away at massive forests, which are then easily sparked by wildfires. Instead of being carbon sinks, they are spewing carbon into the atmosphere, fueling more climate change.

It's warm enough there for mountain pine beetles to reproduce twice a year, dramatically increasing their population and chewing ability, according to researchers at University of Colorado at Boulder.