The French chemist Nicolas Leblanc discovered how to make soda ash from salt in the late eighteenth century.

VOA: special.2011.03.09

The original design of the ceramic filter came from a chemist in Guatemala,Fernando Mazariegos.

VOA: special.2009.06.22

Today,thousands of people are glad that Stephanie Kwolek became a research chemist.

VOA: special.2011.03.01

But a chemist in Texas has another idea.

VOA: special.2009.12.01