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Laboratory experiments led by Hopkins scientists have revealed that so-called “jumping genes” create dramatic rearrangement in the human genome when they move from chromosome to chromosome. If the finding holds true in living organisms, it may help explain the diversity of life on Earth, the researchers report in the current (Aug. 9) issue of Cell.
“Jumping genes,” or retrotransposons, are sequences of DNA that are easily and naturally copied from one location in the genome and inserted els
Ordinary alfalfa plants are being used as miniature gold factories that one day could provide the nanotechnology industry with a continuous harvest of gold nanoparticles.
An international research team from the University of Texas-El Paso (UTEP) and Mexico advanced the work at the Stanford Synchrotron Radiation Laboratory (SSRL) – part of the Stanford Linear Accelerator Center (SLAC) in Menlo Park, Calif. The researchers are using, as tiny factories, the alfalfa’s natural, physiological
Last year was characterised by extremes of weather all over the globe, making it the second-hottest year on record, beaten only by 1988. This year is set to follow that pattern, beginning with a major heat wave: during the first quarter of the year, temperatures were 0.71 degrees Celsius (1.3 degrees Fahrenheit) warmer than the mean for temperatures between 1961 and 1990. What`s behind the apparent increase in weather extremes? To answer this increasingly urgent question, we need precise and detailed
The white cane used by the blind as a travel aid may be universal, but it is not always adequate when it comes to pedestrian crossings. Although some crossings make a sound when it is safe to cross, many do not, and it is at these crossings that the blind need to know when the green man is showing. Adaptations of the white cane have been made, which use laser or ultrasonic waves to detect more distant obstacles, but they do not give information about the width of the road or colour of the traffic lig
To make an omelet, you need to break some eggs. Not nearly so well known is that breaking eggs also can lead to new information about the evolution of birds and dinosaurs, a topic of hot debate among leading biologists.
Drs. Alan Feduccia and Julie Nowicki of the University of North Carolina at Chapel Hill have done just that. They opened a series of live ostrich eggs at various stages of development and found what they believe is proof that birds could not have descended from dinosaurs. Th
Researchers have developed a unique vaccine that destroys a deadly toxin produced by the parasite that causes malaria, which kills more than two million people each year. The vaccine appears extremely promising in animal studies, they say.
If the drug works in humans, it could become a more effective and longer lasting anti-malarial vaccine than those currently available, according to the researchers.
Details of the research will be presented next week (Aug. 21) in Boston at the 2