Scientific news in small doses

A few milligrams of all scientific news of the week

Posted at 7:00 am.

Eric-Pierre Champagne

Eric-Pierre Champagne
Press

Bees killed by antibiotics

As more and more antibiotics are being used to treat different crops, this process seems to be particularly affecting the bees’ ability to feed. That, at least, is the conclusion of a study by a team at Emory University in Atlanta that has just been published in the journal. Proceedings of the Royal Society B. The researchers tested the antibiotic streptomycin on fever bumblebees.bombus impatiens). This antibiotic is used in particular by apple and pear growers. Streptomycin-exposed bumblebees had a harder time finding food, which in turn could affect the pollination needed to produce fruits and vegetables. For several years, the decline in the number of pollinating insects has been of particular concern to scientists.

Quiz

Is climate change causing floods in British Columbia?


PHOTO MARTIN TREMBLAY, LA PRESS ARCHIVE

Extreme weather has caused historic flooding in British Columbia.

Yes, according to Xuebin Zhang, a scientist at Environment Canada. He recently completed a study on the subject, which, however, has not yet been peer-reviewed. Climate change has “significantly contributed” to the atmospheric rivers that lash British Columbia in the fall, the researcher said. These weather events led to several days of heavy rainfall in the province.

Number

0.81


PHOTO BY JOSH LANDIS, AGENCY FRANCE PRESS ARCHIVE

Icebergs are suffering from global warming.

The global average surface temperature in February was 0.81℃ higher than the average recorded in the 20th century.as well as century, as recently announced by the US National Oceanic and Atmospheric Administration. So February 2022 was on the 7thas well as the title of the hottest in the 143 years since this data was recorded. In addition, according to the agency, it is “virtually certain” that 2022 will be one of the 10 hottest years since 1880.

More contaminants in recycled bottles


PHOTO FRANCOIS ROY, LA PRESSE ARCHIVE

Recycled bottles will contain a higher concentration of various chemicals than new bottles.

While recycling plastic bottles is good news for the environment, scientists are calling for better processes to eliminate the chemicals that may be found in them. These are the results of a study published in Journal of Hazardous Materials, which is actually a meta-analysis of 91 studies of pollutants found in plastic bottles. Researchers at Brunel University in London have been able to determine that recycled bottles made from polyethylene terephthalate (PET) contain higher concentrations of various chemicals than new bottles. In 18 of them, the concentrations exceeded the norm.

Pain: different neuronal responses in men and women


PHOTO FIZKES, GETTY IMAGES

The prevalence of chronic pain is higher in women.

Do pains feel different depending on whether you are a man or a woman? Researchers at Carleton University and Laval University have recently become interested in this issue while studying the neural mechanisms associated with chronic inflammatory pain. Tests have shown that these neural mechanisms differ by gender. According to scientists, this, in particular, explains the higher prevalence of chronic pain in women. One of the wishes of the researchers is that research into new pain treatments take into account these gender differences in order to find treatments that work better for men and women. The study was published in the journal Brain.

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