Michael Bravo

There is a genetic difference between Pacific salmon that migrate from the ocean in the spring or summer to spawn and those that make the trip later in the fall, according to a recent study. The finding may have a big impact on conservation efforts along the West Coast.

Why it matters: Conservation groups have fought for the economically important and at-risk spring chinook and summer steelhead salmon populations on the Pacific Coast to be afforded protection under the Endangered Species Act. But that depends on whether they are considered genetically distinct and at risk of losing biodiversity and, until now, early migrators weren't confirmed to be unique from other groups of the fish. The technique could also be used to analyze other species of animals and plants that haven't been classified beyond the species level.

What they found: UC Davis researchers analyzed the DNA of early migrating salmon populations and found variation in a single gene is associated with early migration. Those mutations appear to have evolved only once, suggesting they "will not readily reevolve if lost," the researchers wrote.

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11 mins ago - Sports

The college football season is on the brink

Illustration: Eniola Odetunde/Axios

Power 5 commissioners held an emergency meeting on Sunday to discuss the growing concern that fall sports can't be played because of COVID-19.

Driving the news: The Mid-American Conference on Saturday became the first FBS league to postpone fall sports and move them to the spring, and there are rumblings that Power 5 conferences are ready to follow suit.

Uber CEO proposes "benefits funds" for gig workers

Uber CEO Dara Khosrowshahi. Photo: Scott Heins/Getty Images)

Uber CEO Dara Khosrowshahi called for establishing "benefits funds" for gig workers in a New York Times op-ed out Monday.

Why it matters: Gig workers, who remain independent contractors and not employees, have long pushed companies like Uber for benefits comparable to those received by traditional workers. The coronavirus pandemic and its resultant economic strain has broadened those calls.

Trump tries to set a tax trap for Biden

Photo: Jim Watson/AFP via Getty Images

President Trump is trying to lure Joe Biden into a Walter Mondale trap — attempting to force the Democratic nominee to embrace middle-class tax increases as part of his election strategy.

Why it matters: With his Saturday evening executive action to unilaterally rewrite the tax code, Trump again is demonstrating the lengths to which he’ll go to change the conversation — and try to make the election a choice between him and Biden, and not a referendum on him.