Some surgeons are injecting tiny amounts of silicone oil into the lips to plump them. A few types of silicone oil are approved for injection into the body, but others are not, and none are approved for cosmetic use.
Figure 10c-2: Sir Charles Lyell, 1797-1875. The theory of uniformitarianism was also important in shaping the development of ideas in other disciplines. The work of Charles Darwin and Alfred Wallace on the origin of the Earth's species extended the ideas of uniformitarianism into the biological sciences.
This concept became known as uniformitarianism and can be summarized by the phrase the present is the key to the past.. It was a direct rejection of the prevalent theory of the time, catastrophism, which held that only violent disasters could modify the surface of the earth.