Army pyrotechnic experts find safer alternative for green fireworks

Monday, April 11, 2011 - 09:31 in Mathematics & Economics

(PhysOrg.com) -- For years, the U.S. army and many other agencies around the world have been using hand-held green light-emitting signal flares; flares which are very nearly indispensable under certain adverse conditions. The problem is, the flares contain barium, a toxic metal that can build up quickly on training grounds. Barium is also the ingredient used in fireworks to make them glow green, which creates a problem for places such as Disneyworld that shoot off fireworks every night.

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