13 articles from SUNDAY 10.11.2019

Meteor showers originated from comet 55P/Tempel–Tuttle will be preceded by Taurids six days before

One of the year’s most dependable meteor showers is set to take place at the end of the week. The Leonids will peak in the hours between midnight and dawn on 18 November. They are so-called because they herald from a point in the constellation Leo – the lion. Known as the radiant, this point is located just below Leo’s head, a grouping of stars sometimes referred to as the sickle. Somewhere between 10 and 15 bright meteors an hour can be expected in a typical year.

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How Did a Virus From the Atlantic Infect Mammals in the Pacific?Sea otters and seals in the Pacific Ocean, off the coast of Alaska, are infected with a virus that once was seen only in animals in the Atlantic.A new study suggests that melting ice in the Arctic may be to blame -- and that climate change may help spread the disease to new areas and new animals.Tracey Goldstein, a biologist at the University of California, Davis, got curious when sea otters in the Pacific tested positive for phocine distemper virus -- a cousin of canine distemper virus -- in 2004, two years after a major outbreak among European harbor seals.Genetic analysis showed that the infections in the two groups were connected. Goldstein wondered how a virus usually passed through direct contact with a sick animal had managed to get from one northern ocean to another.Until 2002, the seas around the Arctic Circle remained largely frozen even during the late summer. That year, though, the Arctic Ocean between the North Atlantic and Pacific was passable at the end of the summer, she and her colleagues found.Although sea otters don't venture far from home, seals conceivably could have borne the virus from the Atlantic to the Pacific, Goldstein said.Melting sea ice is a viable explanation for the spread of viruses -- but not the only one, said Charles Innis, a veterinarian and director of animal health at the New England Aquarium in Boston."A skeptic could make arguments that maybe this virus could be transmitted through an intermediate host, like a bird that can fly long-distance," said Innis, who was not involved in the new study. "Or maybe it's being transmitted in the ballast water of ships or something like that."Even the illegal pet or wildlife trade, or tainted meat shipped from one coast to another, might spread a virus, he added.Goldstein and her team also looked at antibodies to the virus in the animals. There was no evidence of antibodies in tests conducted before the year 2000.By 2002, though, the new study found "quite a difference" in antibody levels in Steller sea lions, Goldstein said, suggesting the animals had active infections or had recovered from them.Phocine distemper virus is quite lethal among harbor seals in the Atlantic. Hundreds of harbor seals and gray seals were found dead in 2018 along the New England coast, from Massachusetts to Maine, because of infections with distemper and the flu.But harp seals seem to be better able to survive phocine distemper, Goldstein said, and may serve as its reservoir -- the ecological niche in which the infection persists. Outbreaks may begin when a sick harp seal comes into contact with a gray seal.The outbreaks seem to arrive in cycles, Goldstein said, because the animals build immunity to the infection. Every five to 10 years, as new seals and otters are born and overall immunity wanes, the population becomes susceptible again and another outbreak occurs.The new study identified a second wave of viral antibodies in 2009 in several seal species, including ice seals, northern fur seals and Steller sea lions. The current study ended in 2016, so it's not clear if the virus has been spreading since then, Goldstein said.But she worries that another cycle of infection may not be far off. "These channels in the ice seem to be open every year, so these rare events might become more common," she said.This article originally appeared in The New York Times.(C) 2019 The New York Times Company


A new survey of England’s dialects is instead likely to shine a light on social tribes and generational differences

Are you a blatherskite? Do you have murfles? Are you frightened of Old Harry? In the 1950s, the Survey of English Dialects sent fieldworkers across England to track regional variations in everyday words. Blatherskites were gossips, murfles were freckles and Old Harry was a bogeyman.

Now the survey is being repeated. The research will undoubtedly provide a fascinating update on the changing contours of the English language. Not only have regional dialects shifted, but immigration has introduced many new accents and dialects.

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Research scientists have largely gone unnoticed as major users of unrecyclable material. Now some universities are helping them kick the habit

Scientific research is a largely ignored consumer of single-use plastics, with the biomedical sciences a particularly high-volume offender. Plastic petri dishes, bottles of various shapes and sizes, several types of glove, a dizzying array of pipettes and pipette tips, a hoard of sample tubes and vials: they have all become an everyday part of scientific research. Most of us will never use such equipment, but without it, we wouldn’t have the knowledge, technologies, products and medicines we all rely on. It is vital to 21st-century lives, but it is also extremely polluting.

In 2015, researchers at the University of Exeter weighed up their bioscience department’s annual plastic waste, and extrapolated that biomedical and agricultural laboratories worldwide could be responsible for 5.5m tonnes of plastic waste a year. To put that in context, they pointed out that this was equal to 83% of the plastic recycled worldwide in 2012.

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The Trump administration is putting profits before people by pressuring the country not to ban harmful chemicals

You know it’s a dark day for America when foreign leaders have to lecture US officials about the importance of prioritizing public health over corporate profits.

Yet that is what is happening now, as the Trump administration pressures Thailand not to ban three pesticides that scientific research has shown to be particularly dangerous to children and other vulnerable populations.

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