Blue light isn’t the main source of eye fatigue and sleep loss – it’s your computer

Blue light has been getting blamed for sleep interruption and eye strain. But the facts are that any bright light interferes with sleep, and computers themselves cause eye strain, an eye doctor says.

Social-media use ‘disrupting teen sleep and exercise’

Using social media isn't directly harming teenagers - but it can reduce the time they spend on healthy activities, such as sleeping and exercising, a study suggests.

Teens sleep longer, are more alert for homework when school starts later

Middle school and high school students got more sleep and were less likely to feel too sleepy to do homework after their district changed to later school start times, says study

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