He says the increase in milk production reached a high of more than six kilograms per cow per day.

VOA: special.2009.05.12

The team found levels of lead as high as thirty-two thousand parts per million in tests on some paint samples from Ecuador.

VOA: special.2009.08.31

Breathing in two hundred parts per million of carbon monoxide will cause the first signs of poisoning.

VOA: special.2011.01.25

By two thousand five, they say,farms in northern China produced about the same amount of corn per hectare as farms in the American Midwest.

VOA: special.2009.07.28

Twelve thousand parts per million of the gas will cause death in one to three minutes.

VOA: special.2010.02.02

And the greatest risk reductions were in those who took more than fourteen aspirins per week.

VOA: special.2009.09.01

She arrived at school in New York City -- only to learn that an unwritten limit of "two Negro students per year" had already been met.

VOA: special.2010.04.24

Nicholas Negroponte established the One Laptop Per Child project in two thousand five.

VOA: special.2010.04.12

In the United States, we average seven hundred fifty-two new implants per million."

VOA: special.2010.06.02

Carbon monoxide is measured in parts per million in a normal atmosphere.

VOA: special.2010.02.02

A tsunami travels hundreds of kilometers per hour in deep water.

VOA: special.2009.03.17

In contrast, those who ate two or more servings of brown rice per week had an 11 percent reduced risk.

VOA: standard.2010.06.25

Asian Carp can weigh up to 45 kilograms each, and eat up to half their body weight in food per day.

VOA: standard.2010.07.20

"It's estimated that the average commuter in our region, congestion costs that person in excess of $1000 per year in lost time."

VOA: standard.2010.07.26