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Based on testing done by our sleep experts and headphone expert, these are the best headphones and earbuds for sleep.

Automating screen brightness on Windows based on time of day or battery level saves your eyes and extends battery life.

Deveillance’s Spectre I, developed by a recent Harvard grad, wants to give people control over the always-on wearables surrounding their lives. The problem? Physics.

Scrolling and streaming suck plenty of power on today's Android phones. Here's how to squeeze the most juice out of your battery, including a new option to monitor battery-hungry apps.