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Theories in physics come and go, some are popular yet entirely speculative and fade away quickly, like String Theory, and Superdeterminism, while others continue to provide hope for a framework that can unify gravity at the very large and very small levels.

Dry eye disease is a chronic condition estimated to affect around 360 million people. Common symptoms include uncomfortable, red, scratchy or irritated eyes.Anecdotal claims are that laughter therapy alleviates depression, anxiety, stress, and chronic pain, while strengthening immune function but if you have clinical depression, please don't limit yourself to people saying you need to smile more and get scientific help. Laughter therapy for dry eye disease is a much less risky proposition.

Getting enough sleep is correlated to brain and heart health and after a stroke that is even more important. A new survey finds that is when people who need it are least likely to get it. A cohort of 39,559 people were asked every two years how much sleep they usually get at night on weekdays or workdays. Sleep duration was divided into three categories: short, less than six hours; normal, six to eight hours; and long, eight or more hours of sleep. The group included 1,572 people who had a stroke.Image: Storyblocks

A health data simulation has concluded that a single dose of the Modified vaccinia Ankara-Bavarian Nordic (MVA-BN) was 58% effective in protecting again mpox infection, a disease caused by infection with the Monkeypox virus, which is most likely in men who have sex with men and which causes
a rash, along with other symptoms. 

The neurons in our brains are protected by an insulating layer called myelin. In diseases like multiple sclerosis, this protective layer is damaged and lost, leading to death of neurons and gradual disability.

Researchers in Scientific Reports are claiming the first non-human instance of an animal possessing some mental states (e.g., mental body image, standards, intentions, goals), which are elements of private self-awareness.They show that Labroides dimidiatus (bluestreak cleaner wrasse) checked their body size in a mirror before choosing whether to attack fish that were slightly larger or smaller than themselves. The authors say the cleaner wrasse’s behavior of going to look in the mirror installed in a tank when necessary indicated the possibility that the fish were using the mirror to check their own body size against that of other fish and predict the outcome of fights.

In 1929, an experiment with 28 barley varieties showed why barley, one of the world’s most important cereal crops for at least 12,000 years, has been so adaptable, growing everywhere from Norway to the mountains of South America, and why that means the future remains bright for whiskey and beer.In most cases, random changes to DNA allowed it to survive in each new location so scientists nearly 100 years ago set out to discover the genes that changed to predict which varieties will thrive in which places. Modern work is highlighting for media its implications in a world of future climate change but nothing happening now compares to the rain and drought booms and busts of the past.

Influences buoyed by epidemiological claims about gimmick diets can make fitness intimidating but ignore them. Even if you don't lose weight, if you exercise your belly fat is still going to be healthier than someone who does nothing.It just takes some consistency. 

Robots have a 200-year-old problem: motors. Even walking robots feature arms and legs that are powered by motors and that is a barrier to helping the living but a new muscle-powered robotic leg can jump and move and fast while detecting and reacting to obstacles. 

Mars is no vacation paradise. The temperatures fluctuate dramatically and average minus 80 degrees Fahrenheit. The surface is red dust punctuated by craters, canyons, and volcanoes. On the plus side, the atmosphere is extremely thin, comprising only about 1% of the density of Earth’s, and gravity is 60 percent lower, so you can finally dunk a basketball.With all of those challenges, Martian landers have still been able capture wind measurements — some gauging the cooling rate of heated materials when winds blow over them, others using cameras to image “tell-tales” that blow in the wind. Both anemometric methods have yielded valuable insight into the planet’s climate and atmosphere.If humans ever intend to go there, we'll need more data first.

Alcohol is the best-marketed carcinogen out there. Cigarettes and obesity only wish they were able to devote the money to positive imaging that alcohol, one of the top three lifestyle killers, receives. Instead, governments devote billions to education and awareness of those two while the only tepid warning about alcohol is not to drive after you roll the dice on cancer.When it comes to BPA, PFAS, or weedkillers, government epidemiologists say any presence should be considered pathological but say nothing at all about alcohol use despite it being scientifically shown, unlike most epidemiology, and addictive.

Every country has people claiming to be native now, whereas in previous generations if you were born there, you were native. In reality, outside the cradle in Africa, no one is native.Everyone was an immigrant, and over time everyone calling themselves native to an area now stole land from someone else and colonized it. It's impossible to know who were the first to arrive but science can use inference, and new evidence of human occupation in southeast Indonesia dating back 42,000 years provides some idea of the time and the route taken by some of the first humans to arrive in Australia.