REM sleep behavior disorder and Parkinson's: an early sign
What REM sleep behavior disorder and Parkinson's have in common: a 1,280-patient study, and new research on how the brain responds to the heartbeat.
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Surprising scientific facts, and how scientists found out.
How Long Does the ISS Take to Orbit Earth? About 90 Minutes
How long does the ISS take to orbit Earth? About 90 to 92 minutes, so its crew sees 16 sunrises a day. Learn why, how fast it goes and how high.
AI That Makes Decisions but Can't Chat: Meet Jev
Jev is an AI that makes decisions instead of writing text, built by a former OpenAI researcher. Learn how it works and what independent tests found.
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