9 Form Card 5

The advantage of science is that there are no state boundaries to it. Constant exchange of ideas among the scientists has always existed. The 19^th and the early 20^th centuries were the time of extremely important scientific discoveries. Some of them were of practical character, like the first steam engine, electricity and radio. The others represented ideas and theories. For example, Charles Darwin published two books: “On the Origin of Species” and “The Descent of Man”. The books stated that man came under the same laws as all other living things.  Another man whose ideas radically changed the mentality of people in the 20^th century was Tsiolkovsky. He worked out the theory of space flights. In April 1961 Yuri Gagarin became the first person to orbit the Earth. Throughout the 20^th century science and technology brought a lot of improvements into people`s life. Medical researches help to control or prevent many devastating diseases.

Computers are used to assemble, store, process and reproduce information. The computer age is just dawning. No one can say how far the computer revolution will go or what its long-term consequences may be.