Scientific American
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Is lettuce safe to eat yet? New data suggest cyclosporiasis cases are slowing
After a spike in infections in July, this explosive-diarrhea-causing outbreak may be coming to an end
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Why tornadoes touched down near New York City
Twisters don’t touch down in New York City often, but they can when the conditions are just right
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Why this El Niño will be the largest in living memory
A strengthening El Niño may surpass any seen since the 19th century and will usher in another record hot year or two
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What you need to know about West Nile virus
The mosquito-borne illness has sickened hundreds of people this year
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‘Earth-like’ exoplanets may exist—but we don’t know of any yet
Claiming an exoplanet to be “Earth-like” is a trend that needs to bite the dust