Each 2.54 square centimetre (a square inch) of human skin has six metres (20ft) of blood vessels. Veins hold about 65 per cent of the body's blood and have one-way valves tohelp blood move.

Inside you, there is an amazing network of blood vessels, the tubes that carry blood all around your body. Every part of the body needs oxygen, food and water. The blood vessels are a bit like ...

and the body will do the rest.” Scientists first reported growing artificial human blood vessels in 1986. Niklason implanted ...

What do spiders’ webs, snowflakes and snail shells have in common? They all contain fractals: Nature’s exquisite, endlessly ...