Swamp Sparrow: Singing the Same Tune for Generations

If you listen to an American swamp sparrow's song, you may notice it sounds the same from summer to summer. What you may not know, however, is that every song this little brown bird sings has probably been passed down for 1,500 years. See more

How the Bermuda Triangle Works

You won't find it on any official map, and if you're sailing in the Atlantic, you're likely not to even notice when you cross its vague boundaries. Nevertheless, the Bermuda Triangle — also sometimes known as the Devil's Triangle — for decades has been the subject of numerous books, TV programs, newspaper and magazine articles and websites, and inspired plenty of dread and fascination. See More

How Attorney-Client Privilege Works

FDA's Expanded Access Pre-dates Right to Try by Decades

Dolphins and Porpoises: They're Different!

Dolphins and porpoises are different. You probably figured this was true, even though when you picture them in your mind's eye, they look exactly the same. Admit it. But it turns out, dolphins and porpoises are very different. Both are highly intelligent and communicate by sonar, which is produced through a bulbous structure on the front of their heads called a melon. While there are many more species of dolphin out there — 32 species compared to the six known porpoise species — they both belong, like whales, to a group of marine mammals called Cetacea (from the Greek work ketos, "large sea creature"), the closest living relative of which are hippopotamuses. But if you were to look at a dolphin and a porpoise side by side, you'd likely say to yourself, "oh, that's not what I thought a porpoise looked like at all!" See More >>>