1. the poincaré conjecture.
in 2002, the russian mathematician grigori perelman proved the poincaré conjecture. this is a very serious discovery in mathematics. it was one of the seven tasks of the millennium. for this work, he received the prestigious fields medal, an analogue of the nobel prize in mathematics.
2. quantum clock.
quantum clocks are the most accurate chronometer in the world, surpassing all previously existing ones. nobel laureates of 2012 serge arosh and david wineland made a discovery that allowed to overcome the quantum barrier.
3. the discovery of eris.
the eris is the second after the massive pluto massive dwarf planet of the solar system. it was the discovery of eris from pluto that ceased to be the ninth planet, and passed into the category of "dwarf".
4. created the first synthetic bacterial cell.
in 2010, scientists from the craig venter institute created the first fully synthetic chromosome with the genome. when it was embedded in a bacterial cell devoid of genetic material, it began to function and divide according to the laws prescribed by the new genome.
5. higgs boson.
this was experimental evidence of the existence of the higgs boson. the practical significance of the discovery of the higgs boson is that scientists are opening up prospects for the development of anti-gravity and the development of engines that do not require energy to operate.
1) Something went wrong with our computer. Customers were ringing up all morning complaining. The mechanic is in the office and is working on it. I hope he will find out what is wrong.
2) The society which they set out to create was based on mutual trust.
3) Both ordinary and white chocolate are made from cocoa butter. There are very few people who like neither of them. I have no particular preference: I eat either.
4) Nobody knows where the jewels have gone. They might be stolen.
5) The evacuation of the building took only 10 min.
6) All of us were lucky. We would have crashed if Jack had not seen the rock in time.
7) What was the journey like? - It was nice!
8) The miners dug deep to find coat.
9) The first draft resolution was not discussed yesterday, it had been withdrawn long before the beginning of the meeting.
10) Do you know where he was born ?
11) Get your children to feel responsible for their studies.
12) Her salary's decreased by two hundred dollars this year.