After talks on Wednesday, France's ambassador said they were starting to negotiate on the substance of possible new measures.

VOA: special.2010.04.17

Researchers at the University of Michigan say a substance developed from the spices could reduce the possibility of breast tumors.

VOA: special.2010.06.01

The World Health Organization says hundreds of millions of people throughout the world are affected by mental,behavioral,neurological or substance use disorders.

VOA: special.2010.04.13

The researchers say their study shows a vaginal gel substance reduced the risk of HIV infection among women who used it.

VOA: special.2010.07.21

Shekhar Saxena is director of the Department of Mental Health and Substance Abuse at the World Health Organization.

VOA: special.2011.02.16

Scientists at the Goddard Space Flight Center in Greenbelt,Maryland, found the substance glycine in material brought back to Earth from a comet.

VOA: special.2009.09.30

Some people believe that Sarah studied the hair product she used and added her own "secret" substance.

VOA: special.2010.03.28

Her experiments for the project were supposed to produce a clear substance similar to a thick syrup.

VOA: special.2010.02.09

Scientists in the Washington area have been working with keratin, the main substance in poultry feathers.

VOA: special.2010.06.01

He made everything - except coffee - from sourdough, a substance used in making sourdough bread.

VOA: special.2009.01.24

Cells in the airways begin to produce too much of a thick, sticky substance called mucous.

VOA: special.2009.07.28

A BTU is the amount of heat energy needed to raise the temperature of about one-half kilogram of a substance by one degree Fahrenheit.

VOA: special.2010.11.23

The substance left, called pulp, can be stored until you are ready to make paper.

VOA: special.2009.01.26

The female mosquito uses its thin sucking tube to break the skin, find blood and inject the victim with a substance that keeps blood flowing.

VOA: special.2009.05.26