The word gerbil is a diminutive form of  jerboa , though the jerboas are an unrelated group of rodents occupying a similar ecological niche. One Mongolian species, Meriones unguiculatus, also known as the clawed jird, is a gentle and hardy animal that has become a popular pet.
Video-assisted thoracic surgery (VATS) is a type of surgery that enables doctors to view the inside of the chest cavity after making only very small incisions. The doctor can examine the outside surface of the lung and the inner surface of the chest wall through a camera attached to the scope.
CRTs are glass vessels that have the air pumped out of them. They have very thick glass in the screen area and thinner glass in the narrow neck area. This makes a CRT fairly fragile when it is not encased in a computer or bezel. The neck area is particularly easy to break or crack.