With development encroaching on wild areas around Pittsburgh, encounters between wildlife and humans are becoming more common. It's Doug Bergman's job to keep the peace.
This week on The Allegheny Front, coal fields are fertile ground for fast growing grasses that can be used for biofuel. And a fungus is changing the behavior of infected cicadas. Plus, renewable energy is making up a larger share of energy production as aging nuclear plants are decommissioned.