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

Some are very tall. Yet all are below the level of an observer on the edge, looking over.

VOA: special.2009.10.07

It is the highest level of competition and most popular of all NASCAR series.

VOA: special.2009.04.10

The goal is for all students to perform at the proficient or advanced level.

VOA: special.2011.02.03

It's that time of year. So that the violence level would rise doesn't - doesn't surprise me at all."

VOA: standard.2010.05.26

Speaking in Amharic through an interpreter, Mr.Meles said the agreement would guarantee a level playing field for all competitors in upcoming parliamentary elections.

VOA: standard.2009.11.01

"If we don't get a level of legitimacy and governance, then all the troops in the world aren't going to make any difference,".

VOA: standard.2009.11.04

Americans Venkatraman Ramakrishnan and Thomas Steitz and Ada Yonath from Israel were all instrumental in showing how proteins are made at the atomic level.

VOA: standard.2009.10.07

"We're meeting with people from IOC members all the way down to volunteers, including USOC,VANOC, sponsors from the top level to the national level,to suppliers."

VOA: standard.2010.02.26

Ambassador Rice said she expects a large number, if not all, of the 15 Security Council members to be represented at the head of state or government level.

VOA: standard.2009.09.02

All are highly-educated management-level professionals who previously earned six-figure salaries.

VOA: standard.2010.07.28

"What's very interesting about vitamin D is that it's involved all throughout the body, and it's involved on a local level, so you can have vitamin D active in the breasts, in the prostate,in the colon, and it's thought that the locally-acting vitamin D is helping to protect the body against these cancers, regulating how cells grow and how cells die."

VOA: standard.2010.05.28