alexander bogdanov

Deep meditation and embalming, replacing blood, injecting mouse testicles into the body ... are the methods that the ancient people believed could help immortal people.

Most of these are famous scientists, their inventions have changed the world.

Scientific research is an arduous process and also contains many dangers. Scientists may experience unwanted injuries, get sick or even die to reach the destination of the problem

Many scientists have been clean and enthusiastic about inventing things for humanity. But it was the pet that took away their own lives.