A deadlier version of the infectious disease is ravaging the Democratic Republic of Congo, while the type that caused a 2022 outbreak among gay and bisexual men is regaining strength.
Biodiversity loss, global warming, pollution and the spread of invasive species are making infectious diseases more dangerous to organisms around the world.
White-footed mice, the primary reservoir for Lyme disease, have become more dominant in the U.S. as other rarer mammals have disappeared, one potential explanation for rising disease rates.
New research finds that the death rate among Black youths soared by 37 percent, and among Native American youths by 22 percent, between 2014 and 2020, compared with less than 5 percent for white youths.
Flowers for Karon Blake, 13, who was shot and killed in Washington, D.C., in January 2023. Gun-related deaths were two to four times higher among Black and Native American youth than among white youth.
In a study, improved performance with activities such as 800-meter runs, curl-ups and standing jumps was linked with lower risk of mental health disorder.
In her new book, Beth Linker, a historian of science at the University of Pennsylvania, confronts conventional wisdom about good posture. “It’s fake news,” she said.
H5N1, an avian flu virus, has killed tens of thousands of marine mammals, and infiltrated American livestock for the first time. Scientists are working quickly to assess how it is evolving and how much of a risk it poses to humans.
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