The practice raises familiar questions about data privacy. Video by Mark Thiessen and Rebecca Hale, National Geographic/Face-mask recognition technology courtesy Tryolabs Video by Mark Thiessen ...

After trying eight sleep masks, two stand out — one cheap option and one that’s an investment but has proven to be worth it. This sleep mask has contoured eye cups designed to block out light.

LOS ANGELES — Merv Griffin, the big-band-era crooner turned impresario who parlayed his "Jeopardy" and "Wheel of Fortune" game shows into a multimillion-dollar empire, died Sunday. He was 82.

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