Why are male mice afraid of bananas?
Researchers from McGill University have identified a form of chemical signaling in mice to defend their offspring. The researchers found that proximity to pregnant and lactating female mice increased stress hormones in males and even decreased their.....»»
The differing olfactory worlds of female and male silk moths
A team of researchers from the Max Planck Institute for Chemical Ecology, together with colleagues from the Martin Luther University Halle-Wittenberg, Germany, has studied olfaction in female silk moths. Using electrophysiological methods, they disco.....»»
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......»»
South Korea"s gender imbalance is bad news for men. Outnumbering women, many face bleak marriage prospects
South Korea's bachelor time bomb is about to really go off. Following a historic 30-year-long imbalance in the male-to-female sex ratio at birth, young men far outnumber young women in the country. As a result, some 700,000 to 800,000 "extra" South K.....»»
Researchers engineer in vivo delivery system for prime editing, partially restoring vision in mice
Prime editing, a versatile form of gene editing that can correct most known disease-causing genetic mutations, now has a new vehicle to deliver its machinery into cells in living animals......»»
When bad cells go good: Harnessing cellular cannibalism for cancer treatment
Scientists have solved a cellular murder mystery nearly 25 years after the case went cold. Following a trail of evidence from fruit flies to mice to humans revealed that cannibalistic cells likely cause a rare human immunodeficiency. Now the discover.....»»
In Colombia, rare bird flaunts male and female feathers
On the right side of its body, the bird flaunted the typical blue plumage and black head of the male Green Honeycreeper. On the left, it was a beautiful grass green......»»
Ancient Roman wine production may hold clues for battling climate change
It is no secret that the Romans were heavy wine drinkers. Estimates put the average Roman male's consumption at a liter or more of diluted wine per day. The drink was also a symbol of civilized behavior, and widely used as a drug, medicine and ritual.....»»
Genetic variants underlying male bisexual behavior, risk-taking linked to more children, study suggests
Because same-sex sexual behavior does not result in offspring, evolutionary biologists have long wondered how the genes associated with this behavior have persisted in the human genome, and whether they will remain in the future......»»
Male southern elephant seals are picky eaters, study suggests
As one of the top predators roaming Antarctica, the sizeable southern elephant seal has its fair selection of the menu. But it turns out they don't just want to eat anything and everything......»»
Researchers find large diversity of protists in the Parabasalia phylum in both mice and humans
A team of pathologists, geneticists, immunologists and engineers at the Stanford University School of Medicine, has found a previously unrecognized diversity of protists in the Parabasalia phylum in both mice and humans. In their paper published on t.....»»
FDA would like to stop finding Viagra in supplements sold on Amazon
“Big Guys Male Energy Supplement” turns out to be a vehicle for prescription drugs. Enlarge (credit: Viaframe) If you were to search for a product called “Mens Maximum Energy Supplement" on Amazon, you'd be bombard.....»»
"What"s on today"s menu?": Why it"s important to study the trophic behavior of local predators
Trophic ecology is the study of the food chain. On Tenerife in the Canary Islands, feral cats feast chiefly on rabbits, mice, rats, and native birds and reptiles. But new research shows that since 1986, the island's wild cats have experienced a signi.....»»
A whiff of tears reduces male aggression, says study
Watching someone cry often evokes an emotional response—but according to a new study published Thursday, human tears themselves contain a chemical signal that reduces brain activity linked to aggression......»»
"Doom for forests": fears over new Cambodia land grants
Eam Orn kneels in a forest in northwest Cambodia, pressing his hands together before an offering of bananas studded with smoking incense, and prays for the return of his land......»»
Human brain cells put much more energy into signaling
Signaling molecules help modulate the brain's overall activity. Enlarge (credit: Westend61) Indian elephants have larger brains than we do (obviously). Mice have a higher brain-to-body mass ratio, and long-finned pilot w.....»»
Simplifying the way cell proliferation is monitored in mice
Observing cell proliferation in living animals for a long period requires collecting and analyzing animal organs at multiple points in time. This cumbersome process requires an abundance of resources, including animals......»»
Extremely rare half female, half male bird captured on film
A striking and extremely rare half female, half male bird has been spotted by a University of Otago zoologist......»»
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.....»»