They noted that the grass can absorb and control the spread of harmful wastewaters, like those from pig farms.

VOA: special.2010.02.09

Is all that possible? Experts say one concern is that lawmakers will try to control company decisions like where to build new factories.

VOA: special.2009.06.05

And his quality control system at Motown was like a similar system in car factories.

VOA: special.2009.05.11

Yet animals like sheep or goats can provide a biological control -- they eat weeds.

VOA: special.2009.05.26

Yet animals like sheep or goats eat weeds, so they can provide a biological control.

VOA: special.2010.08.10

Physicists use super-powerful magnets to speed particles and control radiation like X-rays.

VOA: special.2010.10.08

She says the picorna-like viruses seize control of the ribosome in cells.

VOA: special.2009.09.22

Drugs like birth control pills contain a version of this chemical.

VOA: special.2010.03.30

A key stumbling block was Kirkuk. Ethnic Kurds would like to see the oil-rich city under the control of the Kurdistan Regional Government.

VOA: standard.2009.11.09

Clinton said it is "old thinking" to argue that because Washington and Moscow differ on some regional issues, including Georgia, they should not try to address matters of "overwhelming importance" like arms control.

VOA: standard.2009.05.07

"It may not be until maybe a year, or two years from now before we fully understand the impact of the deal-making that was done, in order to secure these voting blocs in places like Qandahar,Helmand, where the insurgency has really taken control, and where the government is the weakest and it has the weakest bargaining position."

VOA: standard.2009.08.03