Hippos may look harmless, but their poop plays a deadly role in their ecosystem. This video explores how their waste can trigger dangerous chain reactions in rivers, affecting fish, other wildlife, ...

Thanks to social media, people around the world have fallen in love with Fiona and Fritz at the Cincinnati Zoo and the adorable memes of baby Moo Deng. It’s easy to see why — baby hippos are ...

This video investigates why hippo waste poses an unusually deadly threat to river ecosystems. Scientists reveal how the sheer ...