He says they might be trying to increase their dopamine levels to make up for the deficits in their reward system.

VOA: special.2009.09.16

They say African governments have to increase their investment in agriculture in order to fight problems related to climate change.

VOA: special.2009.11.17

But Mr.Gustafson sees a better chance for the efforts to increase the popularity of the orange sweet potato in Africa.

VOA: special.2011.01.04

Professor Johnson suspects a strong link between the rise of instant and casual communication online and an increase in writing mistakes.

VOA: special.2010.01.28

People walked thirty-two kilometers a day for three days to increase public awareness and raise money to fight breast cancer.

VOA: special.2009.11.02

The prize committee also credited his efforts with helping to increase aid to needy families in the United States.

VOA: special.2010.06.22

She also linked it to a one to two point increase in the number of women in the labor force.

VOA: special.2010.03.04

And many have. Yet now comes a study showing an increase in the number of injuries in "phys ed" class.

VOA: special.2009.08.06

He says they might be attempting to increase their dopamine levels to make up for the deficits in their reward system.

VOA: special.2009.09.29

Health officials say these numbers usually increase during this time of year as more Americans cook and eat outdoors.

VOA: special.2011.06.17

The study found a sixty-three percent increase in the number of people treated for rock climbing injuries in American hospitals.

VOA: special.2009.12.09

The study found a big increase in the percentage of married women who earn more money than their husbands.

VOA: special.2010.02.19

The United States is preparing for an increase of more than twenty thousand troops there in the coming months.

VOA: special.2009.05.09

But Howard-Yana Shapiro, head of plant science and external research at Mars, thinks that science could greatly increase the yield.

VOA: special.2010.10.19