Harvard's Nicholas Lange says the team looked instead at the chemical and electrical pathways that link the different parts of the brain.

VOA: special.2010.12.21

Scientists at the agroforestry center say the use of fertilizer trees can reduce the need for chemical nitrogen by up to three-fourths.

VOA: special.2009.09.01

The scientists reported their findings in two thousand eight at a meeting of the American Chemical Society.

VOA: special.2009.09.08

Instead,Harvard's Nicholas Lange says the team looked at the circuitry -- the chemical and electrical pathways that link the different parts of the brain.

VOA: special.2010.12.08

Miners and chemical workers are at risk of COPD from breathing dust and harmful chemicals.

VOA: special.2010.06.23

And I also request the United Nations to give guarantees for our own personal integrity, as well as the lives of the people who are being attacked with chemical gases, with electronic interference at this diplomatic site of the sister Republic of Brazil."

VOA: standard.2009.09.29