1 Calories Burned For Walking: 4.6 km/h (13 minutes per km). 2  Calories Burned For Walking: 4 km/h (15 minutes per km). 3  Calories Burned For Walking: 3.15 km/h (19 minutes per km).
The first true hypodermic syringe was created by Alexander Wood in 1853. He modified a regular syringe, which at that time was used for treating birthmarks, by adding a needle. He then used this new device for introducing morphine into the skin of patients who suffered from sleeping disorders.
Hand sewing is an art form that is over 20,000 years old. The first sewing needles were made of bones or animal horns and the first thread was made of animal sinew. Iron needles were invented in the 14th century. The first eyed needles appeared in the 15th century.