History of animal testing of visual areas in cats and monkeys, and provided physiological evidence for the critical period for the development of disparity sensitivity in vision (i.e.: the main cue for depth perception), and were awarded a Nobel Prize for their work. In 1996 Dolly the sheep was born, the first mammal to be cloned from an adult cell. The process by which Dolly the sheep was cloned utilized a process known as nuclear transfer applied by lead scientist Ian Wilmut. Although other scientists were not immediately able to replicate the experiment, Wilmut argued that the experiment was indeed repeatable, given a timeframe
The Marine Mammal Center United States Army built and operated over 265 Nike missile batteries throughout the United States. The best preserved installation is in the Marin Headlands, known as SF88. It was intended to protect local civilian and military populations against attack by Soviet bomber aircraft. It was opened in 1954, equipped with Nike Ajax missiles and later converted to hold improved Nike Hercules missiles. The site was decommissioned in 1974. Portions of the site, including three Nike Hercules missiles can be visited through the GG National Park Service on limited days and hours. The Marine Mammal Center opened in 1975, one year