Why it matters: A look at the scientific breakthroughs changing the world, explorations in space and in worlds beyond our own and the threats posed to us by our own planet, both out of our control and of our own making.

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Most COVID-19 survivors can weather risk of reinfection, study says

Illustration: Sarah Grillo/Axios

COVID-19 survivors tend to have a roughly tenfold increase in protection against the virus, according to a government-funded study published Wednesday.

Why it matters: There have been some documented cases of reinfection leading to concern survivors don't gain any immunity. While there remain questions on how much or how long immunity lasts and what the impact of variants will be, this large set of observational data bolsters evidence there's some protection.

11 hours ago - Science

Tiny clusters of lab-grown cells are a new window into the human brain

Illustration: Aïda Amer/Axios

Clumps of brain cells grown in the lab provide a way to study the organ that is central to our species but is largely inaccessible in living people.

Why it matters: Brain-related disorders — from autism spectrum disorders to schizophrenia to Parkinson's disease — are a leading contributor to disability in people around the world. These purposefully grown brain-like tissues, called organoids, have the potential to help researchers better understand them.

California wildfire victims sue former PG&E executives for alleged neglect

PG&E crews repair power lines that were destroyed by the Camp Fire on Nov. 21, 2018 in Paradise, California. Photo: Justin Sullivan/Getty Images

A trust representing over 80,000 victims of deadly Northern California wildfires ignited by Pacific Gas and Electric's (PG&E) electrical grid filed a lawsuit Wednesday against almost two dozen of its former executives for alleged neglect.

Why it matters: The suit, filed in the San Francisco Superior Court, accuses them of "dereliction of duty" by allegedly failing to ensure the equipment would not kill people.

Updated Feb 25, 2021 - Health

California surpasses 50,000 COVID-19 deaths

A man prepares a funeral arrangement in in Los Angeles, California, Feb. 12. Photo: Mario Tama/Getty Images

California's death toll from COVID-19 surpassed 50,000 on Wednesday, per Johns Hopkins data.

The big picture: It's the first state to record more than 50,000 deaths from the coronavirus.

Feb 25, 2021 - Health

Alaska Gov. Mike Dunleavy tests positive for the coronavirus

Alaska Gov. Michael Dunleavy at the White House in July 16. Photo: Al Drago/Bloomberg via Getty Images

Alaska Gov. Mike Dunleavy (R) tested positive for COVID-19 Wednesday and is isolating at home with mild symptoms, his office announced.

Details: Dunleavy originally got tested after being identified as a close contact to someone who contracted the virus and returned a negative result Sunday morning, per a statement. He still went into quarantine in his home in Wasilla, just north of Anchorage.

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