One reason a coffee obsession is cheaper than, say, a wine obsession: coffee is much more perishable, which means it ...

The color palette of the birds you see out your window depends on where you live. If you're far from the Equator, most birds tend to have drab colors, but the closer you are to the tropics, you'll ...

Scientists have long questioned why there are more brilliantly-colored birds in the tropics than in other places, and they’ve also wondered how those brightly-colored birds got there in the first ...