Trees in an urban environment are put under a lot of stress and many of them don't survive.
Penn State has taken a leading role in researching the pros and cons of Marcellus Shale.
The race is on between the Allegheny Front and Pipeline. The first Facebook page with 1,000 'Likes' wins.
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White-nose Syndrome has killed about a million hibernating bats in North America since 2006.
Most scientists now agree that the earth is warming due to human behavior but the climate change argument remains heated.
The Allegheny Front is part of a news partnership with new website PublicSource, and The Pittsburgh Post-Gazette.
Communities across Pennsylvania would no longer be able to control their own fate when it comes to regulating natural gas drilling, under