Kids News - Science Articles
Most people think about donating blood. However, very few actually do it. According to experts though almost 50% of the US population can be counted as potential blood donors less than 10% ever give. What's worse is that even the most consistent ones donate an average of just three to four times during their lifetime. Though these statistics pertain to the US, the situation is similar worldwide. Now the officials in Sweden are trying to to reverse the trend with the help of modern-day technology.
Recreation Vehicles (RV's) or mobile homes are an excellent way to travel around the world and experience life like a local. It is no wonder that they are getting increasingly popular not just with vacationers but also retirees and seasonal workers. The only drawbacks are that these gas-guzzling homes on wheels are not very environmentally friendly and also somewhat restrictive. That's because they depend on the grid for water and electricity.
The human tendency to gravitate towards people that are similar to them starts early. In school-age children, the behavior called homophily, or 'love of the same' often has to do with how others dress or act. Adults tend to form groups based on social stature, professions or personalities. Turns out that forming cliques and shutting out those that are "different" is not just a human trait. South Africa's Chacma or Cape baboons display similar tendencies as well!
Concrete has been a major contributor to the spread of civilization. From the Pantheon built by the Romans almost 2,000 years ago to our homes today, the concoction made from water, aggregate, and cement, is why our structures can withstand the harsh elements of nature. But this seemingly indestructible material does have an Achilles' heel - The micro-cracks that form as it dries.
The Wapichan or Wapishana tribe of Guyana is an isolated community of less than 6,000 people that live on the edge of the rainforest around South America's Rupununi Savannah, one of the world's largest open ranges of savannah lands. Located in Guyana between the Rupunini River and the Brazilian border, the 5,000 square mile area of pristine grasslands, swamplands and rain-forested mountains has been the source of food and water for the tribe for centuries. Unfortunately, their means of subsistence is now being threatened by illegal logging and gold mining activities.
Need a computer but can't afford the high cost? Then you are in luck. That's because a team of brilliant engineers from Oakland-based Next Thing recently unveiled one that costs a mere $9 USD! Called CHIP, the tiny machine is equipped with a fully-functional operating system that includes dozens of open-source applications such as pre-installed word processing, photo and audio editing, web access, and email.
Human-controlled robot "surgeons" have been assisting doctors in operating rooms since 2000. However, the Single Site "wristed needle driver" that was created by Intuitive Surgical takes robotic precision to a whole new level. That's because its flexible "wrist" allows the instrument tip to move up to 45 degrees in all directions, enabling doctors to operate on organs like the uterus, without making huge incisions that result in unsightly scars.