Start school later, sleep longer, learn better: New study shows that flexible school start times can be an effective and practical approach to reducing chronic sleep deprivation and improving adolescents’ mental health and academic performance.

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TikTok told Mashable its direct messages are encrypted, though not end-to-end encrypted. The difference? On its public safety page, TikTok reiterates that "your direct messages on TikTok are kept safe through encryption as they're being sent and stored. However, at the moment, end-to-end encryption isn't currently available."

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