Humans
- Health & Medicine
Tattoos: The good, the bad and the bumpy
Tattoos and their inks can cause regrets and allergic reactions. But here’s a surprise: Some inked body art may actually benefit health by boosting its host’s immune system.
- Health & Medicine
Flu fighter found in frog slime
A protein found in the mucus secretions of an Indian frog can take down a type of flu virus, a new study finds.
- Fossils
This hominid may have shared Earth with humans
Newfound fossils in South Africa point to a far more recent age for Homo naledi than had been accepted. If correct, this hominid might have coexisted with humans — even interacted with our species.
- Health & Medicine
Active teens build strong bones for life
Adult bones develop much of their strength during adolescence. That’s why teens should stay active with running, jumping and other weight-bearing exercises, a new study finds.
- Archaeology
Stone Age dentists treated cavities with tar
Is Italy the home of dentistry? That’s where treated tooth decay has been found, dating back 14 millennia. Cavities appear picked clean with sharp tools. Ouch!
- Chemistry
Steady heartbeats may depend on white blood cells
Biologists have just found a new role for germ-fighting white blood cells. In the heart they appear to serve as pacemakers so that the heart beats regularly.
- Health & Medicine
Analyze This: Real data on lead levels in school drinking water
The metallic element lead can be toxic if ingested. To keep students safe, many schools now test their water. Some have found dangerously high levels.
- Psychology
Searching for better, cooler friends might backfire
When people try to find the best possible people to hang out with, they become less happy in life, a new study finds.
- Tech
Star Trek gets closer to becoming home tech
Inspired by Star Trek, inventors have created handheld devices to diagnose common medical ailments.
- Chemistry
Scientists know that you pee in the pool
A new way to find urine in pools and hot tubs measures the concentration of an artificial sweetener in the water.
- Health & Medicine
Ötzi the mummified Iceman actually froze to death
Ötzi the Iceman, a mummy whose icy 5,300-year-old remains turned up in the Alps in 1991, died of the cold — not murder. That’s the result of new forensic analyses.
- Health & Medicine
Concerns explode over new health risks of vaping
A host of brand new studies unearth worrisome health concerns related to teen vaping.
