Dolphins are the only beings on the planet that naturally remain awake while they sleep. Half of their brain dreams in a R.E.M state of consciousness; the other half remains awake, with an eye open... This description may be from another edition of this product.
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.