Study: Five Explanations for Global Rise in ADHD (Time)

Globe

The worldwide surge in ADHD diagnoses has prompted some people to wonder if the condition is purely science. A recently published study by sociologists Peter Conrad and Meredith Bergey explores five non-medical trends that may be partially responsible for the uptick in cases of Attention Deficit Hyperactivity Disorder, or ADHD.

To be sure, the researchers aren’t scientists, and many scientific institutions recognize the genuineness of the medical condition and its common development. Read the article here.

Washington’s Teeth Weren’t Made out of Wood (Smithsonian)

Portrait of the president Washington

Contrary to popular belief, George Washington’s dentures were not made out of wood—but they were made out of almost everything else.

Bad dentistry meant that tooth loss was common during Washington’s time, and his complete set of dentures was made from a combination of lead, human teeth, cow teeth, and elephant ivory. Read the article here.

Video: How Carbon Dioxide Travels Around the Globe (NASA)

Scientists at NASA, with the help of an ultra-high-resolution computer model, now have what they call a stunning new look at how carbon dioxide in the atmosphere travels around the globe.

Why Polar Bears Have Smelly Feet (BBC)

Polar bear

There is breaking news in the study of Polar Bears; scientists report they have smelly feet — and not just because baths are few and far between. Pick up the scent (Not literally. That would be gross.) in the BBC article.