It only took 3.6 million years, but the giant prehistoric shark, megalodon, moved one step closer to becoming Maryland’s official state shark Monday. It took only slightly more than a month for the ...

Imagine heading out for a swim and knowing that a shark the size of a bus could be lurking somewhere beneath the surface. This is not the plot of a science fiction movie. It is what life might be like ...

Fifteen million years ago, now-extinct species of dolphins, whales and large sea cows roamed the world’s oceans, topping the underwater food chain. Yet back then, any one of these creatures could ...