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How to Scare an Invasive Fish? A Menacing Robot Predator.

The mosquitofish is not a fussy creature: It can live in filthy bodies of water and has an undiscerning appetite. Larvae? Other fishes’ eggs? Detritus? Delicious. Often, the voracious few-inch creature chomps off the tails of freshwater fish and tadpoles, leaving them to die. But the invasive fish is threatening some native populations in Australia …

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What Happens If You Test Positive for Covid While Traveling?

Either way, for better or worse, these are just recommendations. Some employers, educational institutions, states and counties have additional isolation policies, but few locations actively enforce quarantine. Depending on where you tested positive, you might get a call from a contact tracer. Or you might not. So what happens if you test positive while traveling …

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Biden Administration Promises Stricter Regulation of Lead in Drinking Water

WASHINGTON — The Environmental Protection Agency on Thursday will announce its intention to propose stricter limits on the amount of lead allowable in drinking water and to begin replacing millions of lead pipes that snake throughout the country and pose a significant public health threat. Lead is a neurotoxin that can damage the brain and …

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80,000 Honey Bees Found in Wall of Shower (Also, 100 Pounds of Honey)

A Florida couple recently bade farewell to some uninvited house guests: a colony of as many as 80,000 honey bees that had invaded their shower wall. The colony’s size astounded even Elisha Bixler, the professional beekeeper whom the couple, Stefanie and Dan Graham of St. Petersburg, Fla., had enlisted to get them out of the …

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Vaccines Prevent Severe Disease From Omicron, New Studies Say

A flurry of new laboratory studies indicate that vaccines, and especially booster shots, may offer protection against the worst outcomes from the fast-spreading Omicron coronavirus variant. The highly mutated virus, however, will still cause many breakthrough infections in vaccinated people and in those who have been infected with older versions of the virus, according to …

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New Studies Raise Hopes That Vaccines Prevent Severe Disease From Omicron

A flurry of new laboratory studies indicate that vaccines, and especially booster shots, may offer protection against the worst outcomes from the fast-spreading Omicron coronavirus variant. The highly mutated virus, however, will still cause many breakthrough infections in vaccinated people and in those who have been infected with older versions of the virus, according to …

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C.D.C. Virus Tests Were Contaminated and Poorly Designed, Agency Says

The faulty coronavirus testing kits developed by the Centers for Disease Control and Prevention in the early weeks of the pandemic were not only contaminated but had a basic design flaw, according to an internal review by the agency. Health officials had already acknowledged that the test kits were contaminated, but the internal report, whose …

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