Spending evenings in front of a glowing computer, TV, or cellphone screen can put you at risk of depression, Science News reports. Nighttime exposure to light from gadgets has already been shown to contribute to insomnia, cancer, obesity, and diabetes. Now, a new study shows that screen glow can cause mood-related changes in the brain. For weeks, researchers exposed hamsters […]
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Why do chimpanzees kill one another? For years, many studies have shown that chimps that were observed killing one another had become more aggressive only when humans encroached on their environment. But new studies have lent weight to an alternative theory: Chimpanzees are, like humans, natural-born killers who use violence as a means of expanding their territory and increasing their […]
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Research shows there may be an entire world underneath Antarctica’s ice-free Dry Valleys, which on the surface may seem hostile to life. Below the surface lies rivers of liquid salt water which flow into subsurface lakes, every drop of which could be swarming with microbial life. One of Antarctica’s most unique features, the briny, rusty-red colored Blood Falls, could possibly […]
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For the first time, a mission designed to set its eyes on black holes and other objects far from our solar system has turned its gaze back closer to home, capturing images of our sun. NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR, has taken its first picture of the sun, producing the most sensitive solar portrait ever taken in high-energy […]
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Only 1 in 10,000 people have absolute or “perfect” pitch, the ability to hear a tone and tell what note it is. This unusual ability is acquired early in life, typically learned during training at about four to six years of age, and there are no records of adults acquiring the ability. But a new study shows that people who […]
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Patients are getting larger and perhaps even dangerous doses of radiation from the growing number of advanced medical-imaging tests being ordered by doctors, a new study says. Researchers at the University of California, San Francisco, analyzed data from millions of patients who received medical treatment between 1996 and 2010. They found that the number of patients who underwent CT scans […]
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Karachi, Pakistan Nuclear plants at risk: Pakistani activists are seeking to block the construction of two nuclear power plants in an earthquake-prone, coastal area that is vulnerable to tsunamis. The Chinese are building the two reactors—using an experimental design—less than 20 miles from the sprawling city of Karachi, where 20 million people would be at risk should a reactor meltdown […]
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The species of bacteria that dominate our guts may strongly affect whether we’re thin or fat. Researchers at Washington University collected samples of gut bacteria from pairs of twins in which one was obese and the other thin. Then they transplanted the bacteria into mice. The mice that received the bacteria from the obese twins became obese; the mice that […]
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Meet “Pepper,” said Richard Lawler in Engadget.com. Japanese telecom firm SoftBank unveiled a new, robot last week that it claims “can recognize human emotion” thanks to technology that allows it to “communicate through emotion, speech, or body language.” Pepper is also equipped with microphones and proximity sensors, and will feature upgradable software, allowing users to install apps and updates to […]
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