BOSTON — A new imaging technique takes advantage of DNA’s natural ability to “blink” in response to stimulating light. The new approach will allow unprecedented views of genetic material and other cellular players. It’s the first method to resolve features smaller than 10 nanometers in unmodified, live cells, biomedical engineer Vadim Backman said February 17 […]
In the battle of wits between humans and machines, computers have just upped the ante. Two new poker-playing programs can best professionals at heads-up no-limit Texas Hold’em, a two-player version of poker without restrictions on the size of bets. It’s another in a growing list of complex games, including chess, checkers (SN: 7/21/07, p. 36) […]
Corn genetically engineered to make ninjalike molecules can launch an attack on invading fungi, stopping the production of carcinogenic toxins. These specialized RNA molecules lie in wait until they detect Aspergillus, a mold that can turn grains and beans into health hazards. Then the molecules pounce, stopping the mold from producing a key protein responsible […]
SAN FRANCISCO — The nose knows when you’re tired. Sleep deprivation seems to increase the brain’s sensitivity to food smells, researchers reported March 27 at the Cognitive Neuroscience Society’s annual meeting in San Francisco. That might make snacks more enticing — helping explain why people who burn the candle at both ends tend to eat […]
Called the Great Cold Spot, this dark mark is twice as big as Earth, but cooler and more fickle than the planet’s famous (and similarly sized) Great Red Spot. The cool spot sits in Jupiter’s northern regions, not far from the stunning northern aurora in the planet’s atmosphere. The aurora may play a role in […]
Science News will be on the scene at the April 22 March for Science in Washington, D.C. Follow us on Twitter (@ScienceNews) and watch the live stream below. The march may be “unprecedented,” sociologist Kelly Moore told Rachel Ehrenberg for a blog post giving a historical perspective on scientists’ activism. “This is the first time […]
Zika virus plays hard to get. Weeks after the virus disappears from the bloodstream, it still lingers in the lymph nodes and the central nervous system of rhesus monkeys, researchers report online April 27 in Cell. That could help explain why Zika infection can cause neurological problems in both infants and adults. “Zika does stick […]
Nerve cells in a poorly understood part of the brain have the power to prompt voracious eating in already well-fed mice. Two to three seconds after blue light activated cells in the zona incerta, a patch of neurons just underneath the thalamus and above the hypothalamus, mice dropped everything and began shoveling food into their […]
When the eyes of her mice looked normal, Xu Wang was certain she had done something wrong. She was blasting the mice with blinding light to study how a specific gene affected the animals’ response to eye injury. All the mice were given the drug tamoxifen. Half were engineered to respond to the drug by […]
A method that gives mice a tan without using ultraviolet radiation now works in human skin samples. It’s an early step in developing a lotion or cream that might provide fair-skinned folk with protection against skin cancer. As reported June 13 in Cell Reports, a topical drug penetrated and tanned laboratory samples of live human […]