By snipping off parts of male genitalia and reducing genital sensation in both male and female tsetse flies, researchers induced a suite of changes in female reproduction, including reduced ovulation, reduced sperm storage and increased re-mating attempts by the females.
When the going gets rough, the tough apparently sing slower. As vegetation reclaimed formerly cleared land in California, Oregon and Washington over the last 35 years, male white-crowned sparrows have lowered their pitch and slowed down their singing so that their love songs would carry better through heavier foliage.
The most extensive study of pollutants in marine mammals' brains reveals that these animals are exposed to a hazardous cocktail of pesticides such as DDTs and PCBs, as well as emerging contaminants such as brominated flame retardants.
At a recent IEEE technology conference, UC San Diego electrical engineers presented a solution to their problem with the song "Bohemian Rhapsody"--and it's not that they don't like this hit from the band Queen. The electrical engineers' issue with "Bohemian Rhapsody" is that it is too heterogeneous. With its mellow piano, falsetto vocals, rock opera sections and crazy guitar solos, Bohemian Rhapsody is so internally varied that machine learning algorithms at the heart of their experimental music search engine have trouble labeling the song. The solution presented at the 2009 International Conference on Acoustics, Speech, and Signal Processing (ICASSP) in Taiwan could lead to improvements in the electrical engineers' song labeling and search engine system.
Two genes clarify the genetic control of female sexual maturation, and point to regulatory mechanisms involved in human growth and development.
Cambridge University researchers have discovered that whether someone is a 'people-person' may depend on the structure of their brain: the greater the concentration of brain tissue in certain parts of the brain, the more likely they are to be a warm, sentimental person.
Doctors have issued a warning about excessive cola consumption after noticing an increase in the number of patients suffering from muscle problems, according to the June issue of IJCP, the International Journal of Clinical Practice.
Have you ever gotten sick of pizza, playing the same computer game, or had a song stuck in your head for so long you never wanted to hear it again? If you have, you may suffer from variety amnesia. In new research, Joseph Redden, professor of marketing at the University of Minnesota's Carlson School of Management, may have found a cure for your satiation blues.
This is the time of year when even teens who have never tried a drop of alcohol may be tempted. Middle and high school proms and graduation are big events and there will be multiple parties to attend and a wide array of opportunities for alcohol to be served. Assume that your child will be tempted to drink alcohol at the end of the school year, advises the Science Inside Alcohol Project of the American Association for the Advancement of Science (AAAS). So start talking to your child about alcohol right now.
Two-thirds of American teenagers have sex by the time they're 18. A new longitudinal study finds that when adolescents engage in risky sexual activity, fathers respond by increasing their efforts to supervise and monitor their children.