Elon Musk's X is hiring again, CEO says. It had slashed more than half its workforce.

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Linda Yaccarino, left, will take over from Elon Musk, right, as Twitter's new CEO.
X CEO Linda Yaccarino says the company is hiring again.

Santiago Felipe/Getty Images, Gotham/FilmMagic

I used to work for Apple and watched it lose the K-12 education market to Google. Now it could lose the next generation of fans.

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A girl views a new iPad tablet computer at an Apple store during its UK launch in central London May 28, 2010. REUTERS/Luke MacGregor
A girl views a new iPad tablet computer at an Apple store during its UK launch in central London

Thomson Reuters

X CEO says she's seen Elon Musk training for a cage fight with Mark Zuckerberg. But she's not so sure it'll happen.

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Photo collage of Elon Musk on the left and Mark Zuckerberg on the right
Linda Yaccarino told CNBC she's seen Elon Musk training, but she's not sure a fight will take place against Mark Zuckerberg.

Getty Images

What is overclocking? How to boost your PC's speed and power by changing its CPU settings

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Undergrad enrollment in petroleum engineering has dropped 75% over the past 10 years — even though they make 40% more than computer science grads

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Oil drilling
Petroleum Engineers typically make six-figure salaries, but data shows interest among undergraduate students is withering.

Grant Smith/Construction Photography/Avalon/Getty Images

CHART: AI stocks enter correction territory

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Tom Siebel
Tom Siebel, CEO of the artificial intelligence firm C3.ai.

Courtesy C3.ai

High-powered satellites have made blue-carbon credits a reality. But they still face accuracy and scalability issues.

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One Planet Banner Test

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Who is John Carmack?

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John Carmack holds a microphone in front of a blue background
John Carmack.

Gabrielle Lurie/AFP via Getty Images

Electric roads and battery-swapping stations mean you may never need to plug in your EV again

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One of Ample's white battery-swapping stations sits in a warehouse with a small black car parked inside.
San Francisco-based Ample is working on battery-swapping stations that drop refueling times to just five minutes.

Ample

I drove the $180,000 Lucid Air and saw why it's one of the most impressive Tesla rivals yet

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The Lucid Air Grand Touring Performance.
The Lucid Air Grand Touring Performance.

Tim Levin/Insider

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