The researchers say the nanodiamonds were all found in a level of soil thought to be about 13,000 years old.
VOA: special.2009.01.20
Eartha Kitt said the First Lady asked her why she thought there was so much youth crime in America.
VOA: special.2009.06.07
John Boehner, the minority leader in the House of Representatives, called it "thought crimes" legislation and "radical social policy."
VOA: special.2009.10.31
She made a second recording of Elvis's songs because she thought the owner of Sun Records should hear him sing.
VOA: special.2010.04.04
The man asked. For a moment, Rudolf thought the man was joking, but his face showed he was not.
VOA: special.2010.05.08
The old man thought he and his men could hold Harpers Ferry until slaves in the area rebelled and joined them.
VOA: special.2009.06.18
The new health secretary, Kathleen Sebelius, said the virus does not seem to be as severe as once thought.
VOA: special.2009.05.06
It was thought that only humans did this and that this set us apart from the rest of the animal kingdom."
VOA: special.2009.11.18
Weed thought General William Henry Harrison, one of the candidates in 1836, might be the man the Whigs needed.
VOA: special.2009.01.22
He was young and exciting. Republicans thought he was the right man to lead their young and exciting party.
VOA: special.2009.05.07
Bill and I thought that Ebenezer would pay a ransom of two thousand dollars to get his boy back.
VOA: special.2011.01.22
He said he would get it, but first he wanted to know how big she thought the moon was.
VOA: special.2009.03.28
He thought their ideas about nonviolence and disobedience could be used together to win equal rights for black Americans.
VOA: special.2011.01.17
They told the commander they thought they were west of a small island near the coast of northwestern France.
VOA: special.2010.07.14
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