![The Allegheny Front show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/017/179/small/the-allegheny-front.gif)
Summary: Hydrogen has been seen as the clean fuel of the future for decades. Now, a new effort is pushing for southwestern Pennsylvania to become a "hydrogen hub." A new kind of pipeline would be needed to transport CO2 for storage underground. But a report warns of the dangers of these pipelines and a lack of federal oversight. Plus, a Pittsburgh-led team documents the ivory-billed woodpecker thought to be extinct.