Science

cross-posted from: https://lemmy.world/post/10852021

A team of psychologists, social scientists, philosophers and evolutionary researchers affiliated with multiple institutions in the U.S. has found evidence suggesting that the slight advantage males have in navigation ability is likely due to differences in the ways male and female children are raised.

In their paper published in the journal Royal Society Open Science, the group describes how they studied navigational skills in multiple species to find out if there might be an evolutionary basis for one gender or the other having better skills.

cross-posted from: https://lemmy.world/post/10779171

New research on asexuality shows why it’s so important for doctors and therapists to distinguish between episodes of low libido and a consistent lack of sexual attraction

…

Over the past two decades psychological studies have shown that asexuality should be classified not as a disorder but as a stable sexual orientation akin to homosexuality or heterosexuality. Both cultural awareness and clinical medicine have been slow to catch on. It's only recently that academic researchers have begun to look at asexuality not as an indicator of health problems but as a legitimate, underexplored way of being human.

In biology, the word “asexual” typically gets used in reference to species that reproduce without sex, such as bacteria and aphids. But in some species that do require mating to have offspring, such as sheep and rodents, scientists have observed individuals that don't appear driven to engage in the act.

cross-posted from: https://lemmy.world/post/10745664

Nuclear fusion power was supposed to be a dream come true. As soon as we discovered that you could smash little atoms together to make bigger atoms and release a small amount of energy in the process, scientists around the world realized the implications of this new bit of physics knowledge. Some wanted to turn it into weapons, but others wanted to develop it into a clean, efficient, inexhaustible supply of electrical energy.

But it turns out that fusion power is … hard. Really hard. Really complicated. Full of unexpected pitfalls and traps. We've been trying to build fusion generators for three-quarters of a century, and we've made a lot of progress — enormous, groundbreaking, horizon-expanding progress. But we're not there yet. Fusion power has been one of those things that's been "only 20 years away" for about 50 years now.

The primary challenge is that while it's relatively straightforward to make fusion happen — we did it all the time with thermonuclear weapons — it's much more difficult to make the reaction slow and controlled while extracting useful energy from it.

cross-posted from: https://lemmy.world/post/10673163

Evidence shows that shoving data in peoples’ faces doesn’t work to change minds.

As a scientist heavily engaged in science communication, I’ve seen it all.

People have come to my public talks to argue with me that the Big Bang never happened. People have sent me handwritten letters explaining how dark matter means that ghosts are real. People have asked me for my scientific opinion about homeopathy—and scoffed when they didn’t like my answer. People have told me, to my face, that what they just learned on a TV show proves that aliens built the pyramids and that I didn’t understand the science.

People have left comments on my YouTube videos saying… well, let’s not even go there.

I encounter pseudoscience everywhere I go. And I have to admit, it can be frustrating. But in all my years of working with the public, I’ve found a potential strategy. And that strategy doesn’t involve confronting pseudoscience head-on but rather empathizing with why people have pseudoscientific beliefs and finding ways to get them to understand and appreciate the scientific method.

cross-posted from: https://lemmy.ml/post/10286254

It looks like the paper is paywalled and not yet on scihub but i did find 38 pages of supplemental information with more details than the article.

cross-posted from: https://lemm.ee/post/20291043

cross-posted from: https://lemmy.world/post/10395470

A gel injected into the scrotum could be the next male contraceptive::Biotech company Contraline has safely implanted a sperm-blocking hydrogel in 23 men. It’s designed to be a fully reversible vasectomy.

cross-posted from: https://lemmy.bleh.au/post/1101723

Summary:

The article discusses the phenomenon of microchimerism, where cells from a developing fetus can integrate into the mother's body and persist for years, potentially influencing various aspects of health. This bidirectional transfer of cells between mother and fetus during pregnancy is suggested to occur in various organs, such as the heart, lungs, breast, colon, kidney, liver, and brain. These cells, referred to as microchimeric cells, are genetically distinct entities that may play a role in immune system development, organ acceptance in transplantation, and even influencing behavior.

Researchers propose that microchimeric cells might impact susceptibility to diseases, pregnancy success, and overall health. Studies in mice suggest that these cells acquired during gestation could fine-tune the immune system and contribute to successful pregnancies. The article explores potential benefits and drawbacks of microchimerism, including its role in autoimmune diseases, organ acceptance in transplantation, and pregnancy complications.

Despite the widespread presence of microchimeric cells in individuals, many aspects of their function remain unclear, leading to debates among researchers. Some scientists believe that these cells may be influential architects of human life, potentially holding therapeutic implications for conditions like autoimmune diseases and high-risk pregnancies. However, challenges in studying microchimerism, including their rarity and hidden locations within the body, contribute to the ongoing controversy and uncertainty surrounding their significance.