A new pattern of nestling mortality was found in magpies' nests. Sons died more in the nests with more daughters and daughters died more in the nests with more sons. Researchers think that this pattern, that reinforces the original bias in brood sex composition, implies parental strategies being set as a "package," where specific initial sex composition of a brood is correlated with a specific parental "attitude" towards sons and daughters.
Archive for July 24th, 2010
A new study finds that chokeberry extract inhibits weight gain in insulin-resistant animals and modulates multiple genes associated with adipose tissue growth, blood glucose regulation, and inflammatory pathways.
Researchers from the U.S. and abroad used bacteria inherent to the human vaginal tract to develop a live, topical microbicide that may induce production of HIV-1 protein inhibitors and ultimately prevent transmission of the virus.
A research team has produced flexible transparent carbon atom films that the researchers say have great potential for a new breed of solar cells.
To understand a protein, it helps to get inside of it, and a professor has now figured out a way to do so. A new computer software program and projection system lets a person look at larger-than-life, 3-D structures of proteins in virtual reality. This allows scientists to walk inside, through or around the protein of interest for investigating its structure and function.
Asia's monsoon rains feed nearly half the world's population. A new study of tree rings provides a detailed record of at least four epic failures of the monsoon that have shaken Asia over the last thousand years. The study is expected not only to help historians understand how environment has affected the past, but to aid scientists trying to understand the potential for large-scale disruptions in the face of changing climate.
Middle and high school students who read fluently in English class and on the Web may find that they cannot understand their science texts. And their science teachers may be ill-prepared to guide them in reading the academic language in which science information is presented. A professor of education and expert on language and literacy development makes the case that students need to be taught academic language to learn science and other subjects.
Electromobility makes sense only if car batteries are charged using electricity from renewable energy sources. But the supply of green electricity is not always adequate. An intelligent charging station can help, by adapting the recharging times to suit energy supply and network capacity.
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