Problem: The world produces about 4 billion metric tons of food a year but 1.2 to 2 billion tons is not eaten, the study by the London-based Institution of Mechanical Engineers said. It is instead thrown away. Experts say food is wasted in both rich and poor countries, but for different reasons.

Elliot Woolley teaches sustainable manufacturing at Loughborough University in Britain. He spoke at the Global Conference on Sustainable Manufacturing, which was held earlier this month in Vietnam.

Mr. Woolley said in poor countries, food is usually lost while it is still in the field or during storage and transportation. He said that is because food producers there are inefficient. These businesses are unable to operate effectively without wasting materials, time or energy. But he added that once food is sold in developing countries, people usually eat everything they buy.

However, people in developed countries throw away as much as half of the food they purchase. In the US, big contributors to waste include supersized portions that customers simply can't manage, and"eat as much as you want"offers in restaurants. In the UK, over-conservative sell-by dates on labels and two-for-one offers of perishable items are key factors, encouraging consumers to buy too much food to start with and to throw away items that have reached their sell-by date, but which are still edible. And efficient farming methods, transport and storage mean that most of the wastage occurs through retail and customer behavior. The British researcher called this custom"adisgrace".

Elliot Woolley has created a smartphone app that he says shows users what food they have bought and when the food is about to become unsafe to eat. It also gives information on how people can combine the foods they have to make a meal. The software program is called"Pantry App".

Mr. Woolley said that people who used the app reduced the amount of food they wasted by a third. But this result came from a limited experiment -- users only followed their food use for a week.

Jeremy Bonvoisin is a student at the Technical University of Berlin. He attended the recent conference in Vietnam. He said one way to solve the problem of wasting food is to take steps to persuade people to stop buying so much food in the first place. He said people buy more food than they need because it is becoming less costly. They waste so much food because they buy more than they need.

He said the new app could help those who already want to change the way they use the food they buy. But he is also worried that it could get people to waste more food because they no longer have to pay attention to how much they have bought.
1. Who created a smart phone app?
2. What is it called?
3. What does it do?
4. How many run it daily?
5. What were the claimed results of this?
6. Where does the author of the app teach?
7. What's his name?
8. Do poor countries waste food as well?
9. Who is the 2nd person mentioned in the article?
10. What did he say?
Answer: 1. Elliot Woolley
2. Pantry App
3. shows users what food they have bought and when the food is about to become unsafe to eat
4. unknown
5. the app reduced the amount of food they wasted by a third
6. Technical University of Berlin
7. Elliot Woolley
8. No
9. Jeremy Bonvoisin
10. the new app could help those who already want to change the way they use the food they buy

Q: It isn't that the man had done anything wrong to infuriate Elytte Barbour and his wife.

The couple - married three weeks -- just wanted to kill someone together, police said.

And Troy LaFerrara, 42, happened to be the unlucky one.

The Barbours are accused of luring LaFerrara through a "companionship" ad on Craigslist, and stabbing and strangling him to death.

Barbour told police he and his wife had tried to kill others. But the plans didn't work out.

"This," said Sunbury Police Chief Steve Mazzeo, "happened to be one that worked."

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LaFerrara's body was found in the backyard of a home in Sunbury, a small city about 100 miles northwest of Philadelphia, on November 12.

He had been stabbed 20 times and strangled, police said.

The last number dialed on his cell phone led police to the Barbours.

At first, the wife, Miranda Barbour, 18, denied knowing the victim. But presented with more and more evidence that police had gathered, she confessed.

According to the police affidavit, this is what happened:

Miranda Barbour told police she would use Craigslist to meet men -- "men who wanted companionship," and were willing to pay her for it.

On November 11, she met LaFerrara at a mall, picked him up in her red Honda CR-V and drove to Sunbury.

Elytte Barbour was hiding under a blanket in the back seat, he said. The couple had agreed on a pre-arranged signal so that he would know when "it was time to kill the victim."

Answer the following questions:
1. who go killed?
2. who killed him?
3. how old was LaFerrara?
4. when did they find his body?
5. where?
6. what had barbour told police?
7. where did they find the body?
8. how long had the barbours been married?
9. did LaFerrara do anything to provoke it?
10. where did the last phone number dialed by LaFerrara lead the police?
11. was there an affadavit?
12. how old is Miranda Barbour?
13. how far north is Sunbury from Philadelphia?
14. did Miranda deny knowing the victim?
15. who hid in her back seat?
16. where did they meet LaFerrara?
17. did they have a signal?
18. to do what?
19. how many times did they stab him?
20. was he also strangled?
A: 1. Troy LaFerrara,
2. The Barbours
3. 42
4. November 12
5. in Sunbury,
6. he and his wife had tried to kill others
7. in the backyard of a home in Sunbury
8. three weeks
9. no
10. the Barbours.
11. yes
12. 18
13. 100 miles
14. yes
15. Elytte Barbour
16. at a mal
17. yes
18. signal time to kill
19. 20
20. yes

Problem: Boston (CNN)She knew something awful had happened. It was smoky and all she could hear were muffled screams. Her foot was turned sideways and her legs wouldn't work right. And her good friend, Krystle Campbell, was just lying there on the ground.

Karen Rand -- she's Karen McWatters now -- dragged herself across the pavement. She wanted to get closer to Krystle so they could talk and take comfort from each other in the midst of so much chaos.

"I got close to her, " she recalled. "For some reason, I got close to her head and we put our faces together."

Krystle said that her legs hurt. They were the last words she'd speak. The two women held hands until Krystle's went limp.

McWatters was the fifth witness of the first day of the terror trial of accused Boston Marathon bomber Dzhokhar Tsarnaev, who is accused of detonating pressure cooker bombs with his brother to punish the United States for policies they believe inflict suffering on Muslims.

Three people were killed in the blasts: Campbell, a 29-year-old manager for a restaurant chain; Martin Richard, an 8-year-old boy; and Lingzi Lu, a 23-year-old grad student.

More than 250 others were injured. And the first day of the trial -- after opening statements -- revolved around a number of survivors of the attack, who recounted in detail the chaos of that day. Prosecutors called them to the stand to paint a picture of the havoc and pain the bombings inflicted. Tsarnaev's attorneys chose not to cross-examine any of the survivors.
1. What happened to Karen?
2. Who was with her?
3. Did she make it?
4. Was Karen a witness in the trial?
5. Against who?
6. What is he accused of?
7. Why?
8. Was anyone else hurt?
9. How many?
10. Was anyone else killed?
11. How many?
12. Did any survivors also testify?
13. Were any of them cross-examined?
14. Has Karen gotten married?
15. How many people testified before her?
Answer:
1. Caught in the Boston Marathon Bombing.
2. Krystle Campbell
3. No
4. Yes
5. Dzhokhar Tsarnaev
6. detonating bombs
7. punish the United States
8. Yes
9. More than 250
10. Yes
11. 2 others
12. Yes
13. No
14. yes
15. Four