Problem: Nikola Tesla (Serbian Cyrillic: Никола Тесла; 10 July 1856 – 7 January 1943) was a Serbian American inventor, electrical engineer, mechanical engineer, physicist, and futurist best known for his contributions to the design of the modern alternating current (AC) electricity supply system. 

Tesla gained experience in telephony and electrical engineering before emigrating to the United States in 1884 to work for Thomas Edison in New York City. He soon struck out on his own with financial backers, setting up laboratories and companies to develop a range of electrical devices. His patented AC induction motor and transformer were licensed by George Westinghouse, who also hired Tesla for a short time as a consultant. His work in the formative years of electric power development was involved in a corporate alternating current/direct current "War of Currents" as well as various patent battles. 

Tesla went on to pursue his ideas of wireless lighting and electricity distribution in his high-voltage, high-frequency power experiments in New York and Colorado Springs, and made early (1893) pronouncements on the possibility of wireless communication with his devices. He tried to put these ideas to practical use in an ill-fated attempt at intercontinental wireless transmission, his unfinished Wardenclyffe Tower project. In his lab he also conducted a range of experiments with mechanical oscillators/generators, electrical discharge tubes, and early X-ray imaging. He also built a wireless controlled boat, one of the first ever exhibited.
1. What is Nikola Tesla's heritage?
2. When was he born?
3. And died?
4. Was he a chemical engineer?
5. What is he best known for?
6. Did he work before going to the US?
7. When did he emigrate to the US?
8. Where in the US did he go?
9. Why?
10. Did he stay with Edison his entire career?
11. What did he patent?
12. Who licensed that?
13. How many cities did he do high-frequency power experiments in?
14. What were they?
15. Was he a wireless pioneer?
16. What was his wireless project called?
17. Was it successful?
18. How far would the transmissions gone?
19. What else did he experiment with?
20. Was he the first to make a wireless boat?
Answer: 1. Serbian American
2. 10 July 1856
3. 7 January 1943
4. No
5. for his contributions to the design of the modern alternating current (AC) electricity supply system.
6. Yes
7. 1884
8. New York City.
9. to work for Thomas Edison
10. No
11. AC induction motor and transformer
12. George Westinghouse,
13. Two
14. New York and Colorado Springs
15. Yes
16. Wardenclyffe Tower project
17. No
18. unknown
19. mechanical oscillators/generators, electrical discharge tubes,
20. Yes

Problem: Jack Brown, an office worker, lives in Washington. He inherited a million dollars when he was 23, but he wasn't happy at all.When his college friends were looking for their jobs, he didn't have to. Jack decided to keep living a simple life like everyone else. He gave $ 10,000 of his money to a charity to help poor children live a happy life. Today he is 36. He still wears cheap shoes and clothes and drives a small car only, but he is very happy. Up to now Jack has helped some children from poor countries all over the world, by sending them each $200 a month. The money is used for the children's study, food, medicine and clothing. Jack receives a report each year on the children's progress They can write to each other, but usually the children do not speak English. When Jack first heard about these children, he wanted to help them. "It was nothing special,"he said."Until I went to these countries and met the children I was helping, I didn't know anything about their life." Once Jack went to meet a little girl in Africa, he said that the meeting was very exciting. "When I met her, I felt very,very happy,"he said."And I saw that the money was _ . It brought me happiness. I want to do everything I can to go on helping these children."
1. What is jack's occupation?
2. how old is he?
3. when did he inherit money?
4. how much did he get?
5. did it make him happy?
6. what decision did he make?
7. does he drive an expensive car?
8. do his cheap shoes make him sad?
9. How much of his money did he originally donate?
10. what does he do every month?
11. who?
12. where are they from?
13. what is the money used for?
14. anything else?
15. was it used for education?
16. do the children often speak English?
17. prior ot meeting any of the children, what was Jack's attitude towards helping them>
18. how did hefeel after meeting the little African girl?
19. did it ispire him to keep helping?
20. Does he follow their progress?
Answer: 1. an office worker
2. 36
3. when he was 23
4. a million dollars
5. No
6. to keep living a simple life
7. No
8. No
9. $ 10,000
10. sending them each $200
11. some children
12. poor countries
13. medicine and clothing
14. food
15. Yes
16. No
17. It was nothing special
18. very,very happy
19. Yes
20. Yes

Problem: (CNN) -- Sarah McLachlan, the Grammy Award winning singer and songwriter whose ballads helped so many of us through heartache, breakups and loss, was barely out of her teenage years when her first album was released back in 1988. 

Now, she's a 46-year-old divorced mom of two girls touring the country to promote her seventh full-length solo album, called "Shine On." 

"I'm a whole hell of a lot older," she joked, when I asked her, during a casual conversation at CNN's studios earlier this week, how much her life has changed. 

McLachlan credits her success in the '90s, fueled by memorable hits such as "I Will Remember You" and "Angel," with allowing her to take time off, have children and be a full-time parent. Her girls, now ages 7 and 12, have traveled on tour with her since they were babies. 

"They're the great leveler because they couldn't care less what it is that I do for a living," she said with a laugh. 

The three-time Grammy Award winner and Canadian-born singer didn't quite set out on her career to empower women, but that's what she's done. She spearheaded the Lilith Fair, a concert tour comprised of only female artists and female-led bands in the late 1990s and again in 2010, which raised millions for charities. 

During our mom-to-mom chat, we talked about her biggest worries as a parent, what she admires about the singer Lorde and why her sex life is thriving. The video above and this transcript of our conversation have been edited for length and clarity: 
1. Who is responsible for the hit "I Will Remember You"?
2. In what country was she born?
3. How old is she now?
4. When was her first album released?
5. What decade did she become most successful?
6. What did she decide to do with her earnings?
7. How many children does she have?
8. How old are they?
9. Have they always traveled with her?
10. Is she currently married?
11. Despite that, what does she say is thriving?
12. How many Grammys has she won?
13. Who has she empowered?
14. Was it intentional?
15. Which tour did she lead?
16. What years did it occur?
17. What was notable about this tour?
18. How much was raised?
19. Was the tour male-dominated?
20. What roles did women play in the tour?
Answer:
1. McLachlan
2. Canada
3. 46
4. 1988
5. the '90s
6. take time off
7. two
8. 7 and 12
9. no
10. no
11. her sex life
12. three
13. women
14. no
15. Lilith Fair
16. 1990s and 2010
17. raised money for charities.
18. millions
19. no
20. artists and band members