Since the 1960s, scientists have been bemused and bewildered by what sounded like a deep resonant quacking sound in the southern ocean.
According to a study published in the October issue of Current Biology entitled "Spontaneous human speech mimicry by a cetacean," whales can talk.
The largest man-made structure on Earth is the Great Wall of China. The second largest is about to be the KM3Net neutrino detector, which will span several cubic kilometers under the Mediterranean, listening for whales. Oh, and looking for neutrinos. That too.