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Warren surges to top spot in Iowa poll

Democratic presidential candidate, Sen. Elizabeth Warren (D-MA) greets guests at the Polk County Democrats' Steak Fry on September 21, 2019 in Des Moines, Iowa.
Democratic presidential candidate, Sen. Elizabeth Warren at the Polk County Democrats' Steak Fry in Des Moines, Iowa, Saturday. Photo: Scott Olson/Getty Images

Sen. Elizabeth Warren has overtaken 2020 rival Joe Biden in Iowa to snatch the lead in a Des Moines Register/CNN/Mediacom Iowa Poll of preferred Democratic presidential candidates, published Saturday night.

Why it matters: Per the Des Moines Register, this is the first time Warren has led in the state's poll. It's the latest in a series of surges in the polls for the Massachusetts senator. She's also been drawing big crowds in recent weeks. She drew her largest campaign rally crowd of the 2020 cycle last Monday, when more than 20,000 people flocked to see her at Washington Square Park in New York City.

The last frontier: Robotic brains

Illustration of a brain wrapped up in a lock and chains.
Illustration: Aïda Amer/Axios

Brain–computer interfaces, once used exclusively for clinical research, are now under development at several wealthy startups and a major tech company, and rudimentary versions are already popping up in online stores.

Why it matters: If users unlock the information inside their heads and give companies and governments access, they're inviting privacy risks far greater than today's worries over social media data, experts say — and raising the specter of discrimination based on what goes on inside a person's head.