A tiny, invasive bug is bringing down hemlock trees from Appalachia to southern Canada. And scientists fear another treasured native tree may be going the way of the American chestnut, forever changing forest ecosystems.
Researchers at Virginia Tech are hoping to beat the invaders at their own game. They’re using a new invasive species to keep an old one in check, and save the American hemlock tree.
The European Union is pushing member states to go green -- offering incentives and requiring that utilities cut their carbon emissions and increase their use of renewable energy sources by 20%. That sounds like a noble goal, but it may be having unintended consequences in Virginia and neighboring states – consequences that have some environmentalists up in arms.