The Daily Populous

Wednesday April 7th, 2021 day edition

image for Tire-related chemical is largely responsible for adult coho salmon deaths in urban streams

Every fall more than half of the coho salmon that return to Puget Sound’s urban streams die before they can spawn.

Now a team led by researchers at the University of Washington Tacoma, UW and Washington State University Puyallup have discovered the answer.

But researchers started noticing that, especially after a big rain, returning salmon were dying before they could spawn.

In addition, a study led by McIntyre found that a solution made from tire wear particles was highly toxic to salmon.

Researchers used a multi-step chemical separation process to narrow down the list of possible salmon-killing culprits from thousands of chemicals to one.

We knew that the chemical that we thought was toxic had 18 carbons, 22 hydrogens, two nitrogens and two oxygens.

But when 6PPD reacts with ozone, the researchers found that it was transformed into multiple chemicals, including 6PPD-quinone (pronounced “kwih-known”), the toxic chemical that is responsible for killing the salmon. »

Letterman pays tribute to Johnny Carson

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Only after the monologue was through and Letterman was back behind his desk did he tell the audience who had written the jokes.

Letterman set up one joke by noting scientists had been working on an airplane that flew 50 miles above the Earth.

Carson would read the newspapers in the morning and write jokes, often calling Lassally and delivering them over the phone. »

Facebook did not hire Black employees because they were not a 'culture fit,' report says

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Three Black people allege Facebook chose not to hire them because they weren't a "culture fit.".

After initial reports of Facebook turning down Black applicants for positions because they weren't a "culture fit," more people have filed complaints alleging similar experiences.

A Washington Post article published Tuesday said three Black applicants were rejected from jobs at Facebook despite having met all the qualifications. »

U.S. factories desperate for workers, even as ranks of jobless remains high

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And yet high jobless rates have not translated into workers flocking to open positions on assembly lines.

On Friday, the Labor Department said 916,000 jobs were created last month, the most since last August, including 53,000 manufacturing positions.

About one of every 10 factory jobs were eliminated in the shutdowns versus roughly one of every six service jobs. »