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By Beth Skwarecki The Best (and Worst) Fitness Devices I Tested in 2025
We may earn a commission from links on this page.2025 was a fun year to review fitness devices. We saw three companies introduce devices that could have been Whoop killers, and one definitely came...
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How Useful Are Ankle Weights, Really?
We may earn a commission from links on this page.Ankle weights seem to have tunneled through a wormhole from the 1980s to the present moment, appearing in countless TikToks and Instagram posts. Do...
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Sam Altman’s New Brain Venture, Merge Labs, Will Spin Out of a Nonprofit
Merge Labs, a brain-computer interface startup that seeks to read brain activity using ultrasound, is being spun out of Forest Neurotech, a Los Angeles nonprofit.
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Research Reveals the Optimal Way to Optimize
The leading approach to the simplex method, a widely used technique for balancing complex logistical constraints, can’t get any better.
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Parasites plagued Roman soldiers at Hadrian’s Wall
It probably sucked to be a Roman soldier guarding Hadrian’s Wall circa the third century CE. W.H. Auden imagined the likely harsh conditions in his poem “Roman Wall Blues,” in which a soldier laments...
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Trump’s energy secretary orders a Washington state coal plant to remain open
SEATTLE—The last coal-fired power plant in Washington state was set to go cold at the end of the year. It would then switch to natural gas, cutting carbon emissions in half. The shutdown had been in...
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