The Milwaukee Brewers could use some more pop in their lineup, and there are a few trade candidates that could help them out. Josh Naylor and Ryan O'Hearn are two realistic candidates, and José ...

Costa Rica is home to 117 bat species—nearly 8% of the world’s total! From leaf-tent builders to fish catchers and even ...

Before bats could fly, they used hand-like limbs. Scientists now reveal how evolution transformed those hands into wings.