Generally speaking, the larger the circle you move in, the greater the centripetal force you experience. So, the farther you move away from the center of the merry-go-round, the more force the merry-go-round must exert on you to keep you moving in th...
What has thirty-two brains and three jaws, each with one hundred teeth? The correct answer is a leech, and although I hope to never meet one personally, the fact is that theyre still used in medicine today. Bloodletting went out with the nineteenth c...
The next time youre at a park, watch children playing on a merry-go-round and youll notice that kids sitting in the center of the merry-go-round dont get as dizzy as those hanging on the edge. Thats because the inner ear helps you keep your balance,...
If you keep a garden and have never been bothered by aphids, you are lucky. But one day you may find your rose bushes or bean plants coveredalmost overnightwith these green, greedy sap-suckers. What allows aphidsand thousands of other speciesto appea...
The second type of vaccine contains an attenuated virus. This virus is alive, but has been grown in the lab for several generations, so it isnt able to multiply very well in humans. With the attenuated virus multiplying very slowly, your body is able...
However, the observation that morphine can decrease social behaviors as well prompted scientists to investigate the connection between the opioid system and social relationships. They compared normal baby mice to baby mice lacking a crucial opioid re...
As for why most students dont report needle stick injuriesthat may have to do with the macho culture of medical training. Reporting mistakesespecially small, self inflicted onesis not encouraged. Plus, many med students simply dont have the time to g...
When a virus enters your body, your body has to recognize it, then produce a protein called an antibody. These antibodies attach to the virus and neutralize it; however, in the time it takes your body to produce enough antibodies, the virus may have...
Other causes are harder to pin down. One promising area of research is on the kidney hormone ADH. We all produce more ADH hormone at night. ADH signals the kidney to slow down production. This is why we dont go to the bathroom for eight hours at nigh...
So why arent we using Miscanthus to make biofuel right now? Because scientists still dont know enough about the best way to grow and harvest Miscanthus, or the most efficient way to process it into biofuel. Some European countries burn Miscanthus alo...
Never a happy topic, bed wetting is a very distressing problem for five to seven million American kids. If we cant explain why some people like to pick on these kids, can we at least shed some light on what causes bed wetting? At one time, people pun...
I keep hearing a lot about the potential for turning grasses into ethanol fuel. Is this happening? So first, its true that theres a lot of interest in cellulosic ethanolthat is, fuel made from plants not used for food. And its also true that scientis...
Going through the alphabet one letter at a time might help you remember it. When you come to the initial letter of the word, your memory might be jogged enough to help you complete the two-step process and remember the sound of the word youre looking...
The earth is its own ultrasound machine. All scientists have to do is record when and where the waves occur. Scientists measuring layers of rock in an area of the Pacific floor called the Nankai Trough discovered why earthquakes trigger tsunamis from...
So, determined to improve the number of stroke victims who get to the hospital in time, the National Stroke Association came up with a plan. The program is called Hip Hop Stroke, and it uses rap music to teach school kids to recognize stroke symptoms...
