At the heart of all lithium-ion batteries is a simple reaction: Lithium ions dissolved in an electrolyte solution "intercalate" or insert themselves into a solid electrode during battery discharge.

I know this stuff can get a little high-level and “strength-and-conditioning-nerdy,” but stick with me. My goal here is to help OnSI athletes and the everyday a ...

If you hate speed cameras as much as I hate speed cameras (and government surveillance in general), you will not be delighted to know that the city is activating dozens of speed cameras along Broad ...

We may receive a commission on purchases made from links. Along with better battery life, all three iPhone 17 variants also charge faster than last year's iPhone 16 series. Faster charging is ...

Ookla, the network intelligence company known for its Speedtest tool, today published the results of its second iPhone 16e cellular speed test. In short, Ookla found that the iPhone 16e with Apple's ...

A 90-year-old formula lets speeding drivers set your neighborhood's speed limits and why cities are finally fighting back. HOA ban for millions of Americans gets closer Why You Should Always Ask for a ...

This article is part of our 75 Years of Speed series, an inside look at the backstories of the clubs, drivers, and people fueling the sport. Formula One is safer today than it ever has been in the ...

If you’ve ever been on a road where the speed limit feels artificially low or surprisingly high, you’re not alone. For decades, many states have leaned on a single formula to decide how fast cars ...

New speed cameras are going up along Broad Street, like this one in the 100 block of North Broad. (Emma Lee/WHYY) Have a question about Philly’s neighborhoods or the systems that shape them?

As U.S. climate policy was noisily dismantled in Washington over the spring and summer, another climate story unfolded—quieter, faster, and broadcast to millions. It unfolded in the streets of Monaco.