Researchers found that those with a short version of a certain gene were more likely to get depressed after a sad or difficult experience.

VOA: special.2009.06.24

They have had their genes changed to contain a special characteristic, like resistance to certain insects.

VOA: special.2010.11.09

"Whereas the oil industry may find it business as usual to have a certain number of spills, it is really not acceptable, especially in this day and age.

VOA: special.2011.07.08

"And what happens is we have mazes and the children are able to organize the robots and see if they can get them through the maze within a certain time period."

VOA: special.2010.07.28

"Our health and wellness committee provided us with pedometers and there was a contest to see how many people could log ten thousand or more steps each day over a certain period.

VOA: special.2011.02.28

"When I was reared in the British West Indies my grandmother used to always tell me, you may not be loved by certain forces in a society and you have to understand why.

VOA: special.2011.03.20

"One of the programming problems was try to figure out how to break an arbitrary chocolate bar into a certain number of pieces of a certain number of sizes and to do it as quickly as possible.

VOA: special.2010.03.11

There are two major traits among these GE crops: resistance to certain insect pests, and resistance to a weed-killer called glyphosate.

VOA: standard.2010.04.15

Jarraud notes farmers in certain parts of the world will have to adapt to a dryer climate.

VOA: standard.2009.08.30

It would be embarrassing,I think," . "I would be objecting to that because at a certain point security begins to get into your personal life,"

VOA: standard.2009.12.30

While Iraq still has a long way to go before it reaches stability, there is a certain sense of satisfaction in how the elections were conducted.

VOA: standard.2010.03.08

They are not allowed to smoke within a certain distance of those buildings.

VOA: standard.2010.02.18

In an interview via Skype, Tom Perls said the same technique used to predict long life may also be used to predict whether a person might eventually develop certain diseases.

VOA: standard.2010.07.14

With new studies finding increasingly strong links between diabetes and cardiovascular disease and even certain types of cancers, research to improve this dietary staple has taken on a new urgency.

VOA: standard.2010.06.25