Work in groups. Follow the steps of the jigsaw reading.

Work in groups. Follow the steps of the jigsaw reading.
a Read the article your teacher gives to your group. Help each other to understand it. Use a dictionary if necessary.
b Fill in your line in the table. Use your Workbook.
c Form new groups with at least one member from each of the other groups. Do not show your notes to the new group.
d Take it in turns to ask and answer questions about the different articles so that you can fill in the whole table.
e Go back to your first group. Compare your notes and reconstruct the rest of the articles. Read them aloud in your groups.
f If you have difficulties reconstructing the articles, ask questions to clear them up.
Are aliens coming?
People have been searching for extraterrestrials for years but there is no real proof that they exist. But peoples interest in UFOs surfaces again and again when new quot;factsquot; real or imaginary appear. At the age of globalisation such waves of interest spread all over the world very quickly due to the development of the TV and the internet.
For example, some years ago the quot;Roswell casequot; launched a hot discussion in the USA.
A film showing the autopsy of an alien who died in a UFO crash in 1947 in Roswell, New Mexico, gave what UFO believers claimed to be real proof that extraterrestrials exist. The US Committee for the Scientific Investigation of Claims of the Paranormal examined the film carefully checking every detail, including the age and the quality of the film, the photographer, and the shots of the aliens organs. The investigation proved that the film was not real.
Great inventions
Inventors come up with all sorts of crazy ideas and create a lot of strange things. Cars that run on water, or machines that generate energy are just some examples of what have been invented.
One of the first world-known perpetual motion machines was invented by Charles Redheffer and exhibited in Philadelphia and New York in the beginning of the 19th century Hundreds of people paid a dollar to see it and the invention became a profitable business.
The machine really looked as if it was turning by itself without any power. But it became obvious that there was actually a man off-site who was turning the crank.
For skeptics it was a convincing victory of how common sense prevails, but these types of failures couldnt stop creative inventors.
One hundred and fifty years later, another American, Joe Newman, presented his quot;energy machinequot;. He persuaded people that if they bought one, they could forget about electrical bills after that. Some people believed him and now cant understand why they are still getting electricity bills.
IQ a number that influences your life
IQ is a number that we think shows a persons X V^intelligence. But what does it depend on?
For many years scientists believed that IQ was mostly inherited. One of the largest IQ studies was held by Sir Cyril Burt, professor of psychology at University College of London. He based his theory on the studies of twins and proved that IQ was really mostly inherited. His study was the largest and th results looked truly representative. Even skeptic, believed them.
As a highly respected scientist Burt supportea the much-debated 11+ exam and thus influencec childrens school life throughout Britain.
Burt died in 1971 and what a shock it was wher scientists found out that many results left by th; professor couldnt be called quot;scientificquot; as they wer-. not supported by real figures. What is more, some a his IQ studies did not exist at all, even the names or his assistants were invented by the professor. So, th; role of genes in IQ is still under discussion.
Crop circles
Some people think crop circles have been causes by aliens but there are really no reliable theorie on how they appeared.
They were first noticed in fields in souther? England in the 1970s, but then spread over the worlc People reported that they had seen balls of light anc heard high-pitched noises over the fields. Variou quot;scientificquot; explanations appeared immediately. Somt researchers blamed tornados, while others blames quot;directed plasmaquot; and geomagnetic currents runniru through the Earth. Alien-related theories appeared and military experiments started becoming connect?: with crop circles.
All sorts of interpretations were мейд. Tht circles were given sometimes mysterious or religion-meanings, and even healing powers.
The discussion was hot and unresolved when pair of frauds confessed showing a special press the-used to make the circles.
But it was too late... Many people still want -know why there are crop circles all over the world.

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