Author: healthadmin

The red-tailed snake has become one of the world’s best-known examples of invasive species. The snake, which is native to Australia and the South Pacific, probably reached Guam sometime after World War II, perhaps hiding on a military cargo plane. Its arrival had devastating consequences. The black-throated snake has locally wiped out many bird species in Guam’s forests, and causes hundreds of power outages each year by climbing utility poles and electrical equipment. In some areas of the U.S. territory, snake numbers can reach as many as 30,000 snakes per square mile. The unexpected invasion of snakes This invasion has…

Humans and other vertebrates may share a surprisingly bizarre ancestry. It is a small creature with one eye in the center of the top of its head. A recent study from Lund University and the University of Sussex suggests that the earliest ancestors of vertebrates are thought to have passed through a cyclops-like stage around 600 million years ago. According to the researchers, this animal’s central eye ultimately contributed to the development of the pair of eyes used by today’s vertebrates. Even more surprising, part of that ancient visual system may still survive in the modern brain as the pineal…

French beekeepers and environmentalists are furious after parliament approved a bill to reauthorize two banned pesticides that scientists say can poison bees.”There are no words to express the frustration,” said Carolyn Bouguet, a beekeeper from Essonne, in the Paris metropolitan area. “Honey bee populations are already suffering severely from climate change, new parasites and habitat loss, and now this is happening.”Henri Clément, a beekeeper from the southern Lozère department and a spokesman for the French beekeeping association UNAF, said the move was “an absolute disaster for our beekeeping sector and for biodiversity as a whole.”The risk to bees is “very…

Metformin has been the standard treatment for type 2 diabetes for more than 60 years, but scientists did not fully understand how metformin lowers blood sugar levels. Now, researchers at Baylor College of Medicine and collaborators around the world have identified an unexpected factor behind that effect: the brain. Their findings reveal a previously unknown brain pathway involved in metformin’s antidiabetic effects, opening the door to more precise and effective treatments. This study scientific progress. “It is widely accepted that metformin lowers blood sugar levels primarily by reducing glucose excretion in the liver. Other studies have shown that metformin acts…

In an expanding universe, measuring distance becomes more complicated because space is not fixed while light travels through it. Galaxies continue to emit light, but that light can take billions of years to traverse the universe before reaching us. During that journey, the universe continues to expand, increasing the average distance between galaxies (yes, I know galaxies sometimes collide, but we’re talking on average, large scales here). This means that even though the telescope captures light from a distant galaxy, the images do not reveal where that galaxy is currently located. It shows the galaxy that appeared when light began…

Many people expect memory to fade as a normal part of aging. However, some elderly people, known as superagers, have memory abilities that are equal to or even better than those in their 50s and 60s, even into their 80s and 90s. Scientists have spent nearly two decades identifying the biological, neurological, and psychosocial characteristics associated with superagers. But one big question remains unanswered. Are super-agers people who have inherited an unusually low genetic risk for Alzheimer’s disease? “If that’s true, identifying superagers could be as simple as doing genetic testing rather than the comprehensive cognitive assessments we currently use,”…

At the Branxton Community Center in New South Wales’ Hunter Valley last week, local resident Janet Murray was given five minutes to talk about plans for the state’s largest coal mine expansion.Dozens of people gathered before her to share their views on whether the 19-year extension proposed by Hunter Valley Operation (HVO) should be accepted.As a former blast furnace operations supervisor at Newcastle Steelworks until its closure in 1999, Mr Murray has “first-hand experience” of working in an industry facing major change.She understood that the prospect of continued employment was “a very emotional issue in our community and can be…

Commercial sex workers are exposed to harsh social judgments that negatively impact their mental health. New research reveals that having high self-esteem does not protect against the psychological harm caused by this pervasive prejudice. The study, published in the Journal of Health Psychology, highlights the severe impact social rejection has on marginalized groups. Around the world, individuals who exchange sexual services for money face severe discrimination. Society often labels commercial sex workers as criminals, sexual deviants, and carriers of disease. This institutionalized bias occurs in our interactions with the health care system, financial institutions, and the media. Policies driven by…

Behavioral scientists from UNSW Sydney and Griffith University found no evidence that individual climate-friendly choices reduce people’s interest in broader action on climate change. The study, released on July 23, followed around 2,800 Australians over four years as part of the National Climate Action Survey. Participants who recycle, use reusable cups and containers, take public transport, eat greener meals, and cycle to work were no less likely to support broader climate change policies and collective action. The findings challenge the common argument that governments and companies promote small lifestyle changes to distract from more difficult reforms, such as transforming the…

A UCLA Health study in mice found that inflammation during pregnancy can cause lasting autism-like changes in offspring. The researchers also found that many of the resulting brain and behavioral effects could be rapidly ameliorated in adulthood, albeit temporarily, by a single dose of the immunosuppressive drug rapamycin. Previous studies have shown that even mild inflammation during the second trimester can affect offspring development. Reported effects include autism-like behavior, abnormal brain growth, seizures, and hypersensitivity to normal sounds, touch, and other sensory experiences. These effects can continue into adulthood. In a new study published in nature communicationsUCLA scientists found that…