Tyrannosaurus Rex: The Early Years. Some of the first, fragmentary fossils of Tyrannosaurus Rex were discovered by the famous paleontologist Edward Drinker Cope (with Othniel. C. Marsh, one of the participants in the notorious 19th-century Bone Wars) in South Dakota in 1892.
Wet behind the ears. Naive. The allusion is to the inexperience of a baby, so recently born as to be still wet. This phrase was in circulation in the USA in the early 20th century - twenty years before it was first recorded elsewhere. The converse of the phrase - 'dry back of the ears', was also known in the USA from around the same date. There is not much in the matter so far as the organ [the courthouse record] is concerned except it is so new that it is wet behind the ears yet.
Glue ear occurs when the space behind the ear drum (middle ear) is filled with fluid. The fluid can be thick and sticky which is why it's called glue ear. Glue ear can affect one or both ears. It often follows an ear infection or can occur on its own. See the page on ear infections for an explanation of how fluid can build up in the space behind the ear drum and a diagram of the inside of the ear. Whether or not an ear infection has been treated with antibiotics, the fluid in the space behind the ear drum may stay around for weeks.