Cheerful Tibetan lifestyle ‘linka’ lives on

What special apps does a young Tibetan living on the snowy plateau have on their phone? Recently, a new app called "Linka" has appeared on the phones of young people. Using it, you can easily browse and learn information about the Tibetan culture. Additionally, you can find both the oldest and the latest Tibetan songs, ... Read more

Confusion lingers over health-related pros and cons of marijuana

No one knows whether chronic marijuana smoking causes emotional troubles or is a symptom of them…. This dearth of evidence has a number of explanations: serious lingering reactions, if they exist, occur after prolonged use, rarely after a single dose; marijuana has no known medical use, unlike LSD, so scientists have had little reason to ... Read more

The Arecibo Observatory will remain open, NSF says

The iconic Arecibo Observatory has survived a hurricane and dodged deep budget cuts. On November 16, the National Science Foundation, which funds the bulk of the observatory’s operating costs, announced that they would continue funding the radio telescope at a reduced level. It’s not clear yet who will manage the observatory in the long run, ... Read more

Hormone replacement makes sense for some menopausal women

Internist Gail Povar has many female patients making their way through menopause, some having a tougher time than others. Several women with similar stories stand out in her mind. Each came to Povar’s Silver Spring, Md., office within a year or two of stopping her period, complaining of frequent hot flashes and poor sleep at ... Read more

When it’s playtime, many kids prefer reality over fantasy

Young children travel to fantasy worlds every day, packing just imaginations and a toy or two. Some preschoolers scurry across ocean floors carrying toy versions of cartoon character SpongeBob SquarePants. Other kids trek to distant universes with miniature replicas of Star Wars robots R2-D2 and C-3PO. Throngs of youngsters fly on broomsticks and cast magic ... Read more

Greta Thunberg’s new book urges the world to take climate action now

The best shot we have at minimizing the future impacts of climate change is to limit global warming to 1.5 degrees Celsius. Since the Industrial Revolution began, humankind has already raised the average global temperature by about 1.1 degrees. If we continue to emit greenhouse gases at the current rate, the world will probably surpass ... Read more

This dinosaur might have used its feet to snag prey in midair like modern hawks

Modern birds evolved from dinosaurs, but it’s not clear how well birds’ ancient dino ancestors could fly (SN: 10/28/16). Now, a look at the fossilized feet of one nonavian dinosaur suggests that it may have hunted on the wing, like some hawks today. The crow-sized Microraptor had toe pads very similar to those of modern ... Read more

New images reveal details of two bacteria’s molecular syringes

Some bacteria carry tiny syringes filled with chemicals that may thin out competitors or incapacitate predators. Now, researchers have gotten up-close views of these syringes, technically known as contractile injection systems, from a type of cyanobacteria and a marine bacterium. Figuring out how key parts of the molecular syringes work may help scientists devise their ... Read more