In 21st century majority problems will be solved . There will be less crime and violent , there will be no wars. People in 21st century will be able to work in their homes on computer . Internet will be helpful to do this work . People will have much more time for themselves and their families . In 21st centure Earth will be less polluted becousm technology will be on a higher level . Problem of accomodation and birthrate will be solved . People will be able to travel in space . They will be able to colonize other planets like Mars or Venus . They learn how to terraform whole continents . People will search another „Earth” on the universe . We will be able to feed everybody on our planet . Only robot's will work in factories in whole world . Majority ailment will have vaccine . If people live in clean and save enviroment they will be very happy and satisfied .