![The Allegheny Front show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/017/179/small/the-allegheny-front.gif)
Summary: This week on The Allegheny Front, scientists, nature lovers and filmmakers work to save Pennsylvania's iconic hemlocks. Plus, nano technology meets bird research. And, a bipartisan group of state lawmakers is backing legislation aimed at getting Pennsylvania to 100% renewable energy by the year 2050.