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3 million men across America experience infertility. Today, researchers described a key event during sperm development that is essential for male fertility - a protein controls DNA packaging to protect a man's genetic information. >
One tenet of natural selection is a random walk of genes but nature may be more predictable than rolls of dice suggest. A new study of the mimicry of several distantly-related South American rainforest butterfly and moth species with similar wing color patterns that may warn away predators (it's not a costumed bluff>
It's no secret that humans are not the only species with circadian rhythm - a biological clock. Studying red bread mold may teach us how our own internal clock works and by experimenting with the fungus’ response to light and darkness, researchers can explore its reaction to different substances, food and temperatures>
Honeybees get attention in environmental fundraising campaigns because people don't understand pollination.(1)>
An analysis of pregnant mothers found that children appear to be less at risk for developing peanut or tree nut allergies if their mothers are not allergic and ate more nuts during pregnancy.
In the United States, the prevalence of childhood peanut allergy has more than tripled from 0.4 percent in 1997 to 1>
A perhaps somewhat lugubrious study, published in PLoS ONE, set out to investigate whether decapitation is a humane method of euthanasia in small animals, such as rats and birds. To do this, they used 22 rats that were decapitated while an EEG was recorded. Of these rats, 9 were awake and 8 were anesthetized (5 rats>
