Tag Archives: Proceedings of the National Academy of Sciences of the United States of America

Dying for sex: it’s a male marsupial thing

Agile antechinus. Photo: WWF Australia In what may be the ultimate sacrifice for lust, Australian scientists have discovered why the males of some species of marsupial are dying for sex. Scientists have pondered for decades why the males of more than a dozen native species of insect-eating marsupials, including many small rodent-sized antechinus and phascogales, die […]

Testicle size may indicate men’s childcare aptitude, suggests US study

Men’s aptitude for childcare may be reflected in the size of their testes, according to a study by US scientists. Researchers found that men with smaller testes were more likely to take charge of children’s bath-time, visits to the doctor, night-time comforting, and other parenting jobs than others who have larger testicles. The same story […]