For all the good coffee does, it’s not easy on our teeth. The components in our favorite morning beverage can discolor our pearly whites with every sip. However, not all coffees stain equally. And it ...

Stingrays, also known as sea rays, are flat-bodied members of the Myliobatiformes order; the same order that contains sharks. Within this order, there are eight distinct families of stingrays, with ...