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How to tell if your smoke detector is past its real lifespan even if it still beeps

Your smoke alarm’s chirp can be oddly reassuring, a small sound that suggests everything is still working. Yet the device ...

I took Harvard's free online coding classes to better catch AI's errors - and they're legit

Harvard's free programming classes teach you how to think, debug, and adapt in an AI-driven world where knowing code matters more than ever.