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What kids are doing on tablets seems to matter more than how long they use them. PeopleImages/iStock via Getty Images

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Screen time guidelines for kids and adolescents have shifted as research paints a more nuanced picture

Staff Writer - July 19, 2026

Meeting data center power demands will mean building more transmission lines and acquiring more land to put them on. These lines are in California. Justin Sullivan/Getty Images

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When can a power company take your land for data center infrastructure?

In quantum entanglement, you can learn something about one particle by observing the other in its pair, even across vast distances. koto_feja/E+ via Getty Images

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What does it mean to be ‘quantum’? A physicist explains the basics behind Einstein’s spooky actions at a distance

While there are benefits to personalized tutoring, the evidence isn’t clear that having AI tutors helps students learn better or faster. CreativaImages/iStock/Getty Images Plus

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Despite the growth of some AI schools like Alpha, research doesn’t show that AI tutors are better than human teachers

Colorado passed a landmark artificial intelligence law that was challenged in a federal lawsuit. AAron Ontiveroz/The Denver Post via Getty Images

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Why Colorado replaced its AI discrimination law with a transparency requirement that the feds might challenge anyway

Air traffic controllers observe a plane taking off from San Francisco International Airport in 2017. AP Photo/Jeff Chiu

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Air traffic controller shortages in Newark and other airports partly reflect...

Staff Writer - May 27, 2025

Posters that President Donald Trump used to announce Golden Dome depict missile defense as a shield. AP Photo/Mark Schiefelbein

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Golden Dome: An aerospace engineer explains the proposed nationwide missile defense system

Staff Writer - May 23, 2025

Algebra often involves manipulating numbers or other objects using operations like addition and multiplication. Flavio Coelho/Moment via Getty Images

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Algebra is more than alphabet soup – it’s the language of...

Staff Writer - May 15, 2025

Oak Ridge National Laboratory’s Frontier supercomputer is one of the world’s fastest. Oak Ridge Leadership Computing Facility, CC BY

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Challenges to high-performance computing threaten US innovation

Staff Writer - May 14, 2025

The men’s cricket World Cup final match between Australia and India on Nov. 19, 2023, had a peak of 59 million concurrent streaming viewers. AP Photo/Rafiq Maqbool

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How millions of people can watch the same video at the...

Staff Writer - May 2, 2025

Tatooine’s moisture farming equipment stands in the desert of Tunisia, where parts of the ‘Star Wars’ movie series were filmed. Véronique Debord-Lazaro via Flickr, CC BY-SA

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Some ‘Star Wars’ stories have already become reality

Staff Writer - May 2, 2025

The universe is filled with countless galaxies, stars and planets. Astronomers may find life one day, but they will need extraordinary proof. ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi

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‘Extraordinary claims require extraordinary evidence’ − an astronomer explains how much...

Staff Writer - April 27, 2025

How much charge is left? It can be hard to know for sure. Olemedia/E+ via Getty Images

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Why predicting battery performance is like forecasting traffic − and how...

Staff Writer - April 25, 2025

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