Toxic threat from perchlorate plume slowly recedes

Ten years ago, community leaders were shocked by the discovery that a company that manufactured road flares here had disposed of toxic chemicals improperly, creating a 10-mile-long underground plume of perchlorate, a chemical ...

US to regulate rocket fuel chemical in water

The US government said Wednesday it plans to limit the amount of perchlorate, a chemical found in rocket fuel, explosives and bleach, that is present in the drinking water of millions of Americans.

Beaming rockets into space

Space launches have evoked the same image for decades: bright orange flames exploding beneath a rocket as it lifts, hovers and takes off into the sky. But an alternative propulsion system proposed by some researchers could ...

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