Too much screen time doesn't leave enough time for other important parts of growing up. Predicting which little kids will likely grow into heavy tech users could help target educational campaigns.

During lockdowns, we live our lives through our screens. Here, tech experts share their tips on when - and how - to switch off.

Scientists thought leopards were most active at dusk, but a new study shows it's not so cut and dry. Females are early birds and males are active at night.

Just like humans, a little warm-up helps birds sing better, researchers say. That could explain why they start singing early in the morning.

When news reports tout a drug, people get interested, even if the benefits are unproven. Patient hopes, requests and demands can easily turn into real prescriptions in their doctor's office.

"...many of us may be experiencing circadian disruption which could lead to fatigue, mood changes, changes in sleep patterns, and decreased immune function."

Understanding others' emotions is a crucial social skill. Counter to concerns about screen time stunting kids' development, one study suggests they're getting better at recognizing emotion on screen.

With online learning and social distancing, kids are spending more time staring at screens and less time outdoors. That can put them at higher risk of myopia and serious eye problems in the future.