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The best cheap fitness trackers for 2024

You don’t need to spend a fortune to stay on top of your health goals while tracking your fitness. These days, even cheap fitness trackers come packed with features that help you monitor your heart rate, track your steps and…

Is slightly useful AI worth the extra cash?

My hand is cramping. It’s not carpal tunnel or some other dubious reason that’s causing the pain. It’s an analog ache that is oddly satisfying in a nostalgic way. In the last few days, I’ve held a pen and written…

A new era of hypersonic propulsion

A self-propagating series of explosions, contained between the blades of a high-speed rotor, promises a leap in power and efficiency during hypersonic flight – provided this radical new engine can be built strong enough to withstand its own power. Since…