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Researchers make worrisome discovery while analyzing Philadelphia subway — here's what they found
Riding the subway might feel like a quick escape from city traffic, but for Philly commuters, it's not a break from pollution ...
The Brighterside of News on MSN59m
New fossil discovery reveals the origins of flying reptiles
Skiphosoura bavarica, a newly discovered Jurassic-era pterosaur, has reshaped our understanding of the evolutionary ...