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......»»
Environmental stress rather than genetics influenced height differences in early Neolithic people: Study
The difference in height between female and male individuals in northern Europe during the Early Neolithic (8,000–6,000 years before present, bp) may have been influenced by cultural factors, a paper published in Nature Human Behaviour suggests. Th.....»»
Catalyst makes drugs inside the body to minimize side effects
A highly active catalyst capable of synthesizing drug molecules within the body has been developed by RIKEN chemists. In mice, an anticancer drug assembled near tumors using the injected catalyst suppressed tumor growth......»»
Worm’s rear end develops its own head, wanders off to mate
The butt even grows its own eyes, antennae, and brain. Enlarge / From left to right, the head of an actual worm, and the stolon of a male and female. (credit: Nakamura et. al.) Some do it horizontally, some do it vertica.....»»
Orangutan male success not due to dominance alone, study finds
In primates, the biggest, bossiest males usually get to father the most offspring; and for a long time it was thought that this rule applied to orangutans too. Male orangutans openly compete; and it's the older males with hefty cheek pads, known as ".....»»
Biases behind transgender athlete bans are deeply rooted
In 2023, 24 states had laws or regulations in place prohibiting transgender students from participating on public school athletic teams consistent with their gender identity. These bans mean that a person whose sex assigned at birth was male but who.....»»
New study finds that male pathology in songbirds drives avian epidemic dynamics
New findings by biological sciences researchers at the University of Arkansas indicate that males play an outsized role in both the infection rate and spread of the avian bacterial pathogen Mycoplasma gallisepticum, a common cause of conjunctivitis i.....»»
Tiny worms are helping scientists better understand fertility
Studying sex from just the male perspective misses half the experience. But much of what we know about the origins of reproductive cells comes from looking at sperm and egg formation separately—or only focusing on sperm......»»
Economic crashes linked to rise in male suicides, vast review shows
Governments need to fund health services to support people during recessions and economic crises, say the authors of a vast review of research on the topic to-date......»»
Backlash over fake female speakers shuts down developer conference
Male organizer also accused of secretly running female coder Instagram account. Enlarge (credit: dem10 | E+) After an event organizer, Eduards Sizovs, was accused of making up fake female speakers to attract high-profile.....»»
Malfunction in spermatogenesis: Researchers uncover contribution of cylicin proteins to male fertility
For successful fertilization, sperm should move forward rapidly and be shaped correctly. The unique structure of the sperm cells forms during spermiogenesis. Now, researchers from the University Hospital Bonn (UKB) and the Transdisciplinary Research.....»»
Study: The serotine bat uses its super-large penis as an arm when mating
Further research involves building a "bat porn box" to catch more mating acts on camera. Enlarge / "That's not my arm": Male serotine bats have such large penises, they can use them as an arm while mating. (credit: Alona Shulenko.....»»
Does spaceflight increase men"s risk of erectile dysfunction?
During missions into space, astronauts are exposed to high levels of galactic cosmic radiation and weightlessness. Simulation experiments in male rats indicated that these aspects of spaceflight can negatively affect vascular tissues relevant to erec.....»»
Possible cause of male infertility linked to structural protein
Mature spermatozoa are characterized by a head, midpiece and a long tail for locomotion. Now, researchers from the University Hospital Bonn (UKB) and the Transdisciplinary Research Unit "Life & Health" at the University of Bonn have found that a loss.....»»
Research highlights gender diversity problems in Australian prisons
Trans and gender diverse people housed in male or female prison facilities face dangerous and stressful daily hazards that Australia's prison systems are trying to address to raise standards......»»
Gene integral to initiating, sustaining sperm cell development identified
With male infertility a mounting global concern impacting approximately 12% of men, according to the National Institutes of Health, a Penn State research team has discovered a gene that plays a key role in initiating and sustaining spermatogenesis. T.....»»
Stress wrecks male big brown bat fertility during breeding season
Even on a good day the environment can be wildly unpredictable, from unexpected gusts of wind to food scarcity, and as humans continue to edge out the natural world, the stress on wild populations is increasing......»»
A linguist explains how ‘address terms’ became such a social minefield
‘Dude,’ ‘ladies,’ ‘bro,’ “y’all‘—these address terms are complicated because their meaning changes so often. A male colleague could be forgiven for not knowing if using “gu.....»»
How male mosquitoes compensate for having only one X chromosome
The research group of Dr. Claudia Keller Valsecchi (Institute of Molecular Biology, Mainz, Germany) and their collaborators have discovered the master regulator responsible for balancing the expression of X chromosome genes between males and females.....»»
In checking chess"s gender bias, researchers find parents and mentors shortchange girls" potential
"The Queen's Gambit" miniseries portrayed the life of a fictional chess prodigy, Beth Harmon, who is continuously underestimated in male-dominated competitions. A team of New York University psychology researchers has now found some "real-life" evide.....»»
Filling the data gap for volcanic ash effects on Earth systems
Volcanic ash is no ordinary dust: It gets injected into the atmosphere, climbs to the stratosphere, impacts climate, powders roadways and clogs jet engines......»»