In suspicious environments, like bars and math study groups, females are at greater risk. Scientists from Seoul National University, in Korea, and the Smithsonian Tropical Research Institute in Panama have recently done a study to determine how females avoid the bad males while assessing the good ones.

The males peacock’s showy plumage, for example, is thought to attract females with the promise of better offspring. Showy male peacocks also escape from predators despite their annoyingly conspicuous ornaments and behavior — proof of their superiority.

Need a place to hide? I have a big claw

Call it sperm competition.

According to a study appearing in Current Directions in Psychological Science, sexual characteristics exhibited by human males indicate that men have evolved to deliver their sperm more effectively to females who have multiple partners to choose from.

Temple University School of Medicine researchers have developed a new biosensor that sniffs out explosives and could one day be used to detect landmines and deadly agents, such as sarin gas.

To create the biosensor, Danny Dhanasekaran and colleagues genetically engineered a yeast strain with mammalian (rat) olfactory signaling machinery and genetically linked it to the expression of green fluorescent protein. Into these yeast cells, they cloned individual rat olfactory receptors. When the olfactory receptor "smells" the odor of DNT, an ingredient in the explosive TNT, the biosensor turns fluorescent green. The research team is the first to identify, clone and sequence this novel olfactory receptor.

In the past, the newborns' umbilical cord was not clamped right after birth, thus allowing the blood flow to stop naturally. This practice, known as "late clamping", was replaced by "early clamping", that is, cutting the cord immediately after the infant is expelled.

However, this new practice lacks studies corroborating its benefits. In fact, recent studies on the importance of when clamping should be done have shown contradictory results.

The long search for Herod the Great's tomb has ended with the exposure of the remains of his grave, sarcophagus and mausoleum on Mount Herodium's northeastern slope, Prof. Ehud Netzer of the Hebrew University of Jerusalem Institute of Archaeology announced today.

Herod was the Roman-appointed king of Judea from 37 to 4 BCE, who was renowned for his many monumental building projects, including the reconstruction of the Temple in Jerusalem, the palace at Masada, as well as the complex at Herodium, 15 kilometers south of Jerusalem.

A general view of the slope of Herodium in which Herod's tomb was found.Credit: Hebrew University of Jerusalem photos

Using data from the SCIAMACHY instrument aboard ESA's environmental satellite Envisat, scientists have determined that the carbon monoxide hovering over Australia during the wildfire season largely originated from South American wildfires some 13 000 kilometres away.

Using SCIAMACHY, Annemieke Gloudemans from SRON Netherlands Institute for Space Research and her colleagues at Utrecht University, the Vrije Universiteit Amsterdam and the Netherlands Meteorological Institute (KNMI) witnessed large quantities of released carbon monoxide (CO) above the southern continents. They also saw increased concentrations of carbon monoxide above Central Australia, a desert region that is not prone to forest fires.

 

The news out of Detroit last week was that GM had given up the title of the world’s number one auto company to Toyota.  This was a development that had been expected, but when both companies reported first quarter sales last week, the numbers made it official.  Toyota sold 2.35 million cars and trucks, about 100,000 more than GM. These numbers were expected, as GM had made a decision last year to cut back on bulk sales to rental companies which have historically been included in the total sales numbers.

Memed again! Here are some great blogs that make me think 'outside of my box'. Pass on the meme... Secret Sex Lives of Animals A weekly column on the bizarre, wonderful, colourful and sometimes shocking world of animal mating habits.
The Domestic Minx
A deliciously dysfunctional diary about domestic living.

The Dragon's Tales
A great mix of science and current events from all over the globe.

For years, scientists have studied the molecular basis of memory storage, trying to find the molecules that store memory, just as DNA stores genetic memory.

Brandeis University researchers report for the first time that memory storage can be induced and then biochemically erased in slices of rat hippocampus by manipulating a so-called "memory molecule," a protein kinase known as CaMKII.

No snowflake in an avalanche takes the blame.

Using the same database that the Centers for Disease Control and Prevention (CDC) uses to confirm the rise in obesity rates, researchers have concluded that 100 percent juice is not associated with young children being overweight or at risk for becoming overweight.