Research conducted at the University of Vienna suggests that yawning may play an essential role in cooling our brains. But yawning to cool the brain is “not functional” when the outside temperature is as hot as the body, explained the study’s lead author Jorg Massen. And if you’re wondering: Yes, sleep deprivation does increase brain temperature, which could be a factor in why we yawn more when we’re tired.
The Vikings never warn stupid helmets with horns on them. That wouldn’t have been even the tiniest bit practical for fighting. That whole bit of nonsense started with a 1876 production of Wagner’s Ring Cycle, a German Epic Music Drama, composed by Richard Wagner.
The ancient Greek historian Herodotus described the people who built the pyramids as slaves, and Hollywood really ran with the idea. In reality, the pyramids were built by poor people who came from the north and south of Egypt and were paid. Also they were respected for doing their work, and workers who died during construction were buried in tombs near the sacred pyramids.
When first introduced (in 11th century Italy), forks alarmed religious leaders who said that using artificial hands was an offense to God.
Everyone knows the 5 basic senses Touch, sight, taste, smell, and hearing. But there are actually 4 others, but they are less sexy. The other senses include the sense of space, balance, pain, and temperature.
During World War II, the British were shooting down Nazi planes like a BOSS. The reality of it was the British had pretty much perfected Radar. So they could see the planes coming at them. But they didn’t want to let people know that it was because of the radar. So they started a propaganda campaign that said that the reason they were so good at shooting down planes, was because they ate a shit ton of carrots and it gave them excellent eye sight.
Back in the 1950’s TVs emitted unsafe levels of radiation, but that’s not a thing anymore. So sitting too close would be bad for your overall health back then. But it did nothing to your eyes. While extended close viewings could cause strain and a headache, there’s no lasting damage. In fact, according to the American Academy of Ophthalmology, kids can focus up close without eye strain better than adults.
This was all started by a 1908 book “Scouting for Boys”. But there is no truth to it. Even the American Academy of Pediatrics and the American Red Cross say there is no truth to it.
According to eye doctors at Harvard, reading in dim light won’t cause any ongoing medical condition. It could tire eyes and cause strain, which could mean a bit of a headache. But it won’t cause any lasting damage
Generations of children left school believing blood is blue until it touches oxygen, when it turns red. But that’s totally wrong. Blood is always red. Veins appear blue only because of how light is filtered as it penetrates the skin.