A Colorado inmate involved in the culling of poultry at a farm as part of a pre-release program has the first human case of avian flu in the United States. Here, cage-free chickens walk in a fenced pasture at an organic farm near Waukon, Iowa, in October 2015.
Knot research falls into a few categories: knot theory, a mathematical and theoretical look at knots; and a couple areas of research focused more on applications like DNA structures or surgical sutures in medicine
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A border collie in northern England chases after a flock of sheep to herd them. A new study finds that only about 9% of the variation in an individual dog's behavior can be explained by its breed.
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Moderna says its vaccine appears to be about 51 percent effective for children ages 6 months to less than 2 years, and 37 percent effective for those ages 2 to less than 6 years.
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Rapid tests are effective in detecting BA.2, but the high infectivity of the subvariant means it could jump from person to person before a positive result is detected.
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A medical worker administers tests at a Covid-19 testing site in New York City. New York City and other places in the Northeast are seeing an uptick in infection numbers.
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Health care workers during a strike in Palo Alto, Calif., on Monday. About 5,000 nurses at Stanford and Packard Children's Hospital began a strike Monday over a fight for what they describe as fair contracts.
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