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(04/20/11 4:00am)
A recent European study has found that "more than 18% of alcohol-related cancers in men and about 4% in women were linked to excessive drinking," according to the BBC. The study also showed that even abstaining from alcohol later on did not protect people from alcohol-related cancers.
(04/20/11 4:00am)
What: Researchers have found a new cell transformation method which turns blood cells into beating heart cells without the use of viruses. Scientists shock stem cells to create a gateway which allows them to inject a plasmid which add genes to the cells, turning them into induced pluripotent stem cells. Scientists then use a nutrient and growth factor broth to create beating heart cells.
(04/20/11 4:00am)
A study recently published in the academic journal Science suggests that some species of dinosaur were nocturnal hunters.
(03/30/11 6:45am)
What: A robot named Simon solicits attention from people by waving or with other gestures and can tell when people nearby are ignoring it. In a controlled study, Simon was able to determine whether or not it successfully had captured someone's attention about 80 percent of the time.
(03/30/11 6:36am)
Scientists in Britain have discovered a protein which may be used as a target for a new tuberculosis vaccine. This discovery from Imperial College London could be a first step in the eradication of tuberculosis because though a TB vaccine currently exists - the Bacillus Calmette-Guerin, or BCG vaccine - it is not highly effective. Ajit Lalvani a professor and chair in Infection Diseases at Imperial College London who led the research, said even though most of the world's population has been vaccinated against the disease with BCG, nine million new cases are reported every year.
(03/30/11 6:31am)
For the first time, a spacecraft successfully entered the orbit of the planet Mercury earlier this month. The robotic explorer known as Messenger was sent by NASA to gather data about Mercury, one of the most hostile planets in our solar system because of its proximity to the sun.
(03/02/11 6:37am)
What: Scientists have found a way to make piezoelectric materials more flexible by combining them with silicone rubber, increasing their potential for use on or within the body. Piezoelectric materials generate electricity from kinetic energy. In the future, flexible "lung belts" could harvest energy from the rhythm of breathing to power pacemakers or other implantable devices.
(03/02/11 6:36am)
A recent study presented at the 2011 American Academy of Orthopaedic Surgeons suggests that stretching might not be necessary before a workout. There have been arguments both for and against static stretching of the muscles and ligaments before exercise. Some believe that stretching reduces the risk of injury, while others say it has no effect or may even be detrimental. To study the impact of stretching on injuries in runners, researchers followed 2,792 runners for a three-month period. One group stretched prior to its runs, while the others didn't. The study found that the rate of injury was 16 percent for each group. "The risk of injury was the same for men and women ... and across all age groups," said Dr. Daniel Pereles of Montgomery Orthopedics in Washington, D.C., who performed the study. The researchers did find a correlation between weight and risk of injury - the heavier the runner, the greater the risk. Runners who had sustained exercise-related injuries less than four months before the study were also at a higher risk of injury. Runners who normally stretched before workouts and suddenly stopped - like some of those in the non-stretching group - were at an even greater risk.
(03/02/11 6:34am)
A recent study has shown that macaques can experience uncertainty and self-doubt. The macaques, which are Old World monkeys, were trained to play a videogame in which they judged the density of a pixel box on a computer screen. They used a joystick to move a cursor toward either a letter 'S' (for sparse) or 'D' (for dense). They also could choose a question mark on the computer screen.
(02/16/11 7:12am)
Human interference with delicate ecosystems can have significant, long-term effects. The introduction of rats to Hawaii, for example, has decimated many of the island's bird species. Human damage to the structure of ecological systems, moreover, has led to the extinction of native species. By some estimates the current extinction rate is at 100 to 1,000 times the historical average.
(11/17/10 7:01am)
Perhaps somewhat unnervingly, a recent study conducted in France has shown that bisphenol A, a chemical found in some plastics, can be absorbed through the skin. This finding has sparked renewed interest in the chemical, which has been a source of concern since the 1930s, when researchers first began exploring its possible toxic effects.
(11/03/10 4:32am)
Researchers at Northumbria University in England have released the findings of a study that posed an intriguing question: What dance moves are most attractive to women? Nineteen men were recorded dancing and evaluated by a group of 37 women in an attempt to find that coveted answer.
(09/29/10 5:12am)
This year's unusually warm summer was the cause of many health issues for humans worldwide - poor air quality, heat stroke and fire danger were only a few examples. But humans and other land dwellers aren't the only species that suffer from hot weather. One marine ecosystem in particular has scientists worried: coral reefs.
(08/25/10 4:56am)
Four months after the Deepwater Horizon oil spill began April 20 in the Gulf of Mexico, the federal government has re-opened waters, and the Louisiana shrimping season has officially begun. Still, some individuals are uneasy at the thought of eating seafood from a part of the ocean where about 205.8 million gallons of oil have gushed into the water, along with more than a million gallons of chemical dispersants.