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Cannabis interferes with the working memory we use to keep track of what we are doing, but whether the drug causes long-lasting memory impairments is less clear
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Emergency crews continue to urge residents of a small Kentucky town to stay out of their homes after a train derailed, catching fire and spilling chemicals
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Authorities in Colorado say the driver of a semi-trailer truck was killed when a train derailed and a bridge collapsed, spewing coal and mangled train cars across a major highway near Pueblo on Sunday.