For if McClellan discovered how few men were left behind, he could smash through easily and capture the city.

VOA: special.2009.09.17

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

VOA: special.2011.03.09

Mister Kao discovered how to transmit,or send,light signals over long distances through optical glass fibers.

VOA: special.2009.12.08

She discovered how much fun jazz music was to play, because it is always changing.

VOA: special.2009.12.18

In the eighteen hundreds, researchers discovered how to make salicylic acid from the chemical.

VOA: special.2010.12.14

Scientists have discovered more details about how plants use water.

VOA: special.2010.01.26