Diseases, Conditions, Syndromes

Why Lyme disease is common in the north, rare in the south

The ticks that transmit Lyme disease to people die of dehydration when exposed to a combination of high temperature and lowered humidity, a new USGS-led study has found. In an earlier related study, the researchers found ...

Health

Even low lead levels in children negatively affect test scores

A decrease in the average level of lead in a preschooler's blood reduces the probability of that child being substantially below proficient in reading by the third grade, a new National Bureau of Economics Research working ...

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