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New fossil studies reveal that ancient predators like saber-toothed cats vanished rapidly after their primary prey species declined.

In two new studies, researchers at the State University of Campinas (UNICAMP) in the state of São Paulo, Brazil, have shed ...

The hiking club John Muir started with some friends has grown into one of the most influential environmental organizations in ...

PHTUX - Principal LifeTime Hybrid 2050 Instl - Review the PHTUX stock price, growth, performance, sustainability and more to help you make the best investments.