During the 1920s, car ownership exploded. Everyday consumers were making more money and families were able to afford vehicles. In turn, businesses such as drive-in movie theaters and restaurants became more popular. After all, if the notions that drove …
Elizabeth Taylor, born in 1932, was a British-American actress. She began her career as a child actress in the early 1940s and was one of the most popular stars of classical Hollywood cinema in the 1950s. She then became the highest-paid movie star in the 1…
The first therapeutic uses of light (so-called light therapy) date back to the end of the twentieth century, when a Danish researcher, Niels Ryberg Finsen, showed that light stimulates the immune defenses and enables the fight against infections. The tr…
South African mineworkers being x-rayed before leaving the diamond mines. A trained radiologist like the one in the picture can easily identify even the smallest diamond, which a would-be thief might attempt to smuggle out of the mine in his stomach. Ea…