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The Best Blue Light Blocking Glasses for 2020

Digital displays are everywhere. Whether you watch TV, work on a laptop, or browse on your smartphone, you’re exposed to artificial light. Some research suggests that the blue light emitted from these devices could be disruptive to our health. While you could set these displays to a softer night mode, …

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Spies can eavesdrop by watching a light bulb’s variations

Michael Blann | Getty Images The list of sophisticated eavesdropping techniques has grown steadily over years: wiretaps, hacked phones, bugs in the wall—even bouncing lasers off of a building’s glass to pick up conversations inside. Now add another tool for audio spies: Any light bulb in a room that might …

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