Causality test could help preserve the natural world

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Source: http://feeds.newscientist.com/c/749/f/10897/s/23e74a6b/l/0L0Snewscientist0N0Carticle0Cmg215288430B30A0A0Ecausality0Etest0Ecould0Ehelp0Epreserve0Ethe0Enatural0Eworld0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story01.htm

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