Blue beauty

Marvellous photos taken by astronaut: Sunita Williams

LONG LIVE THE HAMBURGUER!

Did you think hamburguers were a modern food? Believe it or not, the origin of the hamburguer goes all the way back to ancient Egypt – more than four thousand years ago! Much later, the soldiers of Genghis Khan, a Mongol emperor in the 13th century, ate steak of minced beef. They took this recipe with them to Russia. Russians eat a variation called “tartar steak”: raw, minced meat mixed with many spices. The name “hamburguer” comes from the German city of Hamburg, where it was very popular in the 14th century. This is when the hamburguer began to look like the ones we see today: a flat cake of minced beef placed between two slices of bread. The hamburguer arrived in Britain in the 19th century. After that, the British introduced this food to the USA. Nowadays, the hamburguer is one of the most popular meals in the world.

UNDER THE SEA

Life under the sea is very different from on land. It is difficult for people to see, hear and move well under the water. Unlike fish, people cannot obtain oxygen directly from water. Instead, they need to carry oxygen tanks with them. People need to be healthy and in good shape to stay underwater for a long time. Their hearts, ears and lungs must be strong, since these are the organs that suffer the most underwater. People need special equipment for underwater diving such as a diving mask, fins, a wetsuit, a weight belt, a compressed air cylinder and some goggles.