Q: Chlorine is a chemical element with symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine.

The most common compound of chlorine, sodium chloride (common salt), has been known since ancient times. Around 1630, chlorine gas was first synthesised in a chemical reaction, but not recognised as a fundamentally important substance. Carl Wilhelm Scheele wrote a description of chlorine gas in 1774, supposing it to be an oxide of a new element. In 1809, chemists suggested that the gas might be a pure element, and this was confirmed by Sir Humphry Davy in 1810, who named it from based on its colour.

Because of its great reactivity, all chlorine in the Earth's crust is in the form of ionic chloride compounds, which includes table salt. It is the second-most abundant halogen (after fluorine) and twenty-first most abundant chemical element in Earth's crust. These crustal deposits are nevertheless dwarfed by the huge reserves of chloride in seawater.

1. Chlorine
2. a chemical element
3. symbol Cl
4. yes
5. 17
6. yellow-green
7. gas
8. no
9. electron affinity
10. electronegativity
11. unknown
12. in 1774
13. Carl Wilhelm Scheele
14. an oxide of a new element
15. Sir Humphry Davy
16. 1810
17. yes
18. no
19. unknown
20. yes

Numbered questions:
1. What is this about?
2. What is that?
3. What is it represented by?
4. Is there a specific number?
5. What is it?
6. What color is it?
7. What state is it?
8. Is it non-reactive?
9. What does it have the highest of?
10. And ranks at number three as?
11. Where is it usually found?
12. When was it first written about?
13. By whom?
14. What did he say it was?
15. Who later spoke of it?
16. When?
17. Is it found in the ocean?
18. In small quantities?
19. What ranking is it, in common-ness?
20. Do we consume it?

Q: Everyone dreams of seeing the world. But some people take that dream to the extreme.

In 2000, Canadian Jean Beliveau was suffering from a mid-life crisis . He thought a good walk might help. So, he decided to go for one... around the whole world. It took him 11 years and 54 pairs of shoes. He ate insects in Africa, survived a puma attack in South America, and fell in love for nine days in Mexico. Jean has successfully overcome his mid-life crisis and is now writing a book about his 75,000- kilometre journey.

A Russian man, Vladislav Ketov, is currently cycling around the globe. So far he's ridden through 93 countries. And he's been at it for 20 years. Why so long? Two reasons. Firstly, he's not just going through countries, he's actually riding along the coast of every continent. Secondly, he set off without any money. He has to draw portraits of the people he meets along the way to carry on with his trip. Of course, he is planning to write a book on his eventual return, too.

Then there's Ezra Cooley. He set out in 2006 with the idea of riding his horse around the world. Why? "I've always wanted to accomplish something," Ezra said. So far he's only ridden across the United States and part of Australia. He recently took a year off to write a book about his trip.

Circling the globe has a long history. In 1901, Captain Voss (from Canada) set off around the world in a 12-metre dugout canoe . Even more impressive, the canoe, which Voss bought from a Native American woman, was built in the early 19th century. He armed the canoe with a Spanish cannon for protection. The journey took three years and, of course, Voss wrote about his trip in a book.

1. Everyone
2. Jean Beliveau
3. Jean Beliveau
4. a mid-life crisis
5. in 2000
6. he walked
7. 11 years
8. 54
9. insects
10. Africa,
11. nine days
12. Mexico
13. 75,000- kilometre
14. Vladislav Ketov
15. Russian
16. 93
17. 20 years.
18. draws portraits
19. 20 years
20. Ezra Cooley.
21. 2006
22. he wanted to accomplish something,
23. yes

Numbered questions:
1. Who dreams?
2. who was suffering?
3. who was suffering?
4. From what?
5. When?
6. What did he do about it?
7. for how long?
8. How many pairs of shoes?
9. What did he eat?
10. Where
11. How long did he fall in love?
12. Where?
13. How far was his walk?
14. Who is cycling around the globe?
15. What nationality is he?
16. How many countries has he gone through?
17. For how long?
18. How does he sustain himself?
19. For how long?
20. Who rides his horse around the world?
21. When did he start?
22. Why?
23. Did he take a year off?

Q: (CNN) -- One of four former Khmer Rouge leaders charged with crimes against humanity was ruled unfit to stand trial and could be set free, a spokesman for the special U.N. court in Cambodia said Thursday.

Lars Olsen said the Extraordinary Chambers in the Courts of Cambodia decided that Ieng Thirith, the 78-year-old former minister of social affairs in the Khmer Rouge regime, was "not fit to stand trial as she has dementia."

Prosecutors have 24 hours to object to the court's decision, Olsen said. If there is no objection, Ieng Thirith will be released, he added.

Opening statements by the defendants are scheduled for Monday.

Ieng Thirith was the only woman among the four defendants in the trial, which charges surviving leaders of the four-year Khmer Rouge regime in the 1970s with crimes against humanity, grave breaches of the Geneva Conventions, genocide, homicide, torture and religious persecution.

The other defendants are her husband, Ieng Sary, the former Khmer Rouge foreign minister; Khieu Samphon, the nominal head of state; and Nuon Chea, the prime minister, also known as Brother Number 2.

The head of the Khmer Rouge, Pol Pot, was known as Brother Number 1. He died in 1998, long before the U.N.-backed court came into existence.

Under Pol Pot's leadership, the Khmer Rouge regime was responsible for the deaths of millions of ordinary Cambodians during a four-year reign of terror that was eventually halted in 1979 by invading Vietnamese forces.

In 1975, the Khmer Rouge ordered people out of Phnom Penh, the capital, and other cities in Cambodia to work in the countryside.

1. A spokesman for the special U.N. court
2. Former minister of social affairs in the Khmer Rouge regime
3. 78
4. She was "not fit to stand trial as she has dementia."
5. Yes
6. Yes
7. Ieng Sary, Khieu Samphon, and Nuon Chea
8. Crimes against humanity
9. Grave breaches of the Geneva Conventions
10. Cambodia
11. Phnom Penh
12. Khmer Rouge
13. Four years
14. 1979
15. Pol Pot
16. Brother Number 1
17. Nuon Chea
18. Ordered people to work in the countryside.
19. Millions
20. Yes
21. One

Numbered questions:
1. Who is Lars Olsen?
2. Who is leng Thirith?
3. How old is she?
4. What did Lars Olsen say about her?
5. Has she been charged with crimes?
6. Does she have co-defendents?
7. Who are they?
8. Name one of the crimes they are charged with?
9. And another?
10. What country did these things happen in?
11. What is its capital?
12. Which faction or group were the defendents part of ?
13. How long did it last?
14. When did it end?
15. Who was its head?
16. What other name was he known by?
17. Who was Brother Number 2?
18. What did the Khmer Rouge do in 1975?
19. How many Cambodians died?
20. Is brother no 2 one of the defendents?
21. How many women are defendents?