![]() This took hundreds of millions, if not billions, of years. Why can’t we on Earth see the far side of the Moon?īecause the Moon’s rotation on its axis has become tidally locked in its revolution around the Earth. Temperature change might be a bigger issue. But deep-sea fishes lack an air bladder-it wouldn’t do them any good because, at depth, the air would be squeezed out by water pressure-and would suffer no pressure-related problems. If you rapidly reel in a fish from 100 or 200 feet deep, the bladder will expand and may even be partially forced out of the mouth. Most shallow and semi-deep fishes have enclosed sacs, called gas bladders or swim bladders, for buoyancy control. It depends on whether the animal has an enclosed air sac. The ritual became part of the American Indian stereotype through early frontier literature and Hollywood westerns.Ĭultural Information Specialist, American Indian Museumĭo animals brought up from the seafloor suffer ill effects, such as the bends, from the change in pressure? English and French colonists encouraged it by offering bounties to Indians, first for Indian scalps and then for the scalps of the colonists’ white enemies. But note that only a few tribes took enemy scalps as trophies of war many Native people considered the practice repugnant. They are red-green colorblind-the canine eye lacks one of the three types of color-discerning cone cells in the human eye-but they can see colors, just on a narrower, less vibrant spectrum than we see.Īssociate Director of Animal Care Sciences, National Zooĭid Native Americans learn scalping from European settlers? Such a range suggests it originated millennia ago and in an indeterminable place.ĭirector and Curator, Smithsonian Folkways RecordingsĪctually, they don’t. But yodeling can be heard in Persian classical music, African Pygmy music, Scandinavian music, the Mexican son huasteco and other musical traditions. In his book Kühreichen oder Kühreigen: Yodeling and Yodeling Song in Appenzell (1890), the scholar Alfred Tobler reports that the first documented reference to yodeling in Europe was as early as 1545. ![]()
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