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Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

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EMMA's point of view (Photo: Brain Corp.)

Walmart is moving fast into the autonomous age. Last week, it ordered 15 advanced self-driving semi-trucks from Tesla, and now LinkedIn's Chip Cutter reports that a few stores are testing out EMMA, an autonomously driven floor scrubber. EMMA can careen through Walmart aisles at a whiplashing 2.5 miles an hour, evading unalert shoppers, stacks of cereal boxes along her way.

Why it matters: It's another lesson in the reality of robotics. Like iRobots and the Roomba, Brain Corp. started out with heady ideas of commercializing artificial intelligence, but has discovered that, at least for now, the technology and the market is much more prosaic.

EMMA is the invention of Brain Corp., a southern California robotics company that promotes the self-driving cleaner as an alternative to employing human janitors.

Go deeper

Reddit traders look to pummel Wall Street's old guard

Illustration: Sarah Grillo/Axios

Reddit traders are taking on Wall Street pros at their own game with this basic mantra: Stocks will always go up.

Why it matters: Their trades — egged on in Reddit threads — have played a role in historic market activity in recent days.

The week the Trump show ended

Data: NewsWhip; Chart: Andrew Witherspoon/Axios

Donald Trump was eclipsed in media attention last week by President Biden for the first time since Trump took office, according to viewership data on the internet, on social media and on cable news.

Why it matters: After Trump crowded out nearly every other news figure and topic for five years, momentum of the new administration took hold last week and the former president retreated, partly by choice and partly by being forced off the big platforms.

Pay TV's bleak post-pandemic outlook

Data: eMarketer; Chart: Axios Visuals

The pandemic has taken a huge toll on the Pay-TV industry, and with the near-term future of live sports in question, there are no signs of it getting better in 2021.

Why it matters: The fraught Pay-TV landscape is forcing some smaller, niche cable channels out of business altogether.

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