Urban gardens may contain lead. Here's what the research says about the hidden health risk

How you can stop your cat from bringing home unwelcome pathogens

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Engineering enzymes with potential against ALS and Parkinson's disease

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El Niño arrives and could rank among strongest events since 1950

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Saturday Citations: JAXA collaboration with toy company TOMY; a new brain-computer interface; IBD solved

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The Ghosts of the Mediterranean: What a rare great white shark sighting could reveal about a changing ocean

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NASA launches robot to rescue aging Swift telescope from fiery demise

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