News

Braces hurt so much because they are dissolving your jawbone

Misaligned teeth can put you at risk for tooth decay, gum disease, and even tooth loss. Braces shift teeth by applying pressure, which constricts blood flow to the surrounding tissue that holds those teeth in place. That in turn causes special immune cells called osteoclasts to rush in and dissolve […]
Braces hurt so much because they are dissolving your jawbone
News

A 160,000-year-old jaw from a human ancestor was found in a Tibetan cave. It might explain why Tibetans are able to live at high altitudes today.

Scientists have discovered a 160,000-year-old jawbone from an ancient human ancestor in a cave in Tibet. A new study identified the jawbone as originating from a member of the Denisovan group of hominin ancestors. Denisovans were an enigmatic offshoot of Neanderthals whose fossilized remains had previously been found only in […]
A 160,000-year-old jaw from a human ancestor was found in a Tibetan cave. It might explain why Tibetans are able to live at high altitudes today.
News

Ancient graves hid the skeletons of more than 260 children who likely had their hearts removed. It is the largest known child sacrifice, and archaeologists still don’t know why.

Scientists found 269 children, 466 llamas, and 3 adults buried at two dig sites near the modern-day coastal town of Huanchaco, Peru. It’s the largest mass sacrifice of children to date in the archaeological record. Archaeologists think the mass sacrifice took place 500 years ago during the reign of the […]
Ancient graves hid the skeletons of more than 260 children who likely had their hearts removed. It is the largest known child sacrifice, and archaeologists still don’t know why.
US

What happens to your body when you start exercising regularly

Leading a more active lifestyle takes time, effort, and determination, but in the end, it’s really worth the shot. Here’s what will happen to your body when you exercise regularly. Following is a transcript of the video. If you’re thinking about leading a more active lifestyle, you’re not alone. In […]
What happens to your body when you start exercising regularly