A story about scientists getting inspiration from biology and getting inventions.

Inspired by turtles, they invented submarines.

Iron:

In the eighth century, China people invented iron and began to use it. At that time, people in China used charcoal-heated irons to iron silk clothes. The iron at that time was like a small pot with a long handle. Around16th century, Dutch tailors began to use hollow box iron. 1738, Wilkinson, England obtained the patent of iron, which is an iron casting box for ironing linen. /kloc-the Sino-Sri Lankan gas-fired electric iron was introduced in the 1950s, but it was eliminated by the electric iron in the 1990s. The electric iron was invented by American Seeley (using shielded arc). 1926, new york Eldik company made a household steam iron. 1938 the iron made in Connecticut has a thermostat with adjustable temperature, which is very convenient to use.