Going without sleep can become dangerous quickly, with symptoms like cognitive impairment and hallucinations appearing after just a few nights. After 24, 36, 48, and 72 hours without sleep, problems ...

Need a new monitor for your PC? I’ve combed through scores of options to find the best monitors on the market right now. These picks are the result of hundreds of hours spent testing the latest models ...

For more than 1,500 years, nerves were thought to function through the action of 'animal spirits'. In the seventeenth century, René Descartes conceived of these 'spirits' as liquids or gases, and used ...