Vultures have such bulletproof digestive systems they can even eat anthrax. But their powerful stomachs also serve an important environmental function.
The invasive Hessian fly spurred suspicions of biological warfare, threatened the new nation’s economy and inspired the nation’s first citizen science project.
High levels of toxic 'forever chemicals' in the airport’s stormwater are being discharged into tributaries of Montour Run, a popular stream in Allegheny County.