Researches at the Max Planck Institute for Astrophysics have carried out the first fully three-dimensional computer simulations of a core collapse supernova over a timescale of hours after the initiation of the blast. The model will explain how initial asymmetries, which emerge deep in the dense core during the very early stages of the explosion, fold themselves into inhomogeneities observable during the supernova blast, researchers say.

Our daily lives are filled with changes that force us to abandon old behavioral strategies and develop new, more appropriate responses. While it is clear that new rules are often deduced through trial-and-error learning, the neural dynamics that underlie the change are not well understood.

A study in Neuron has uncovered new information about the neural dynamics of developing new problem solving strategies. The research supports the idea of "a-ha" moments in the brain that are associated with sudden insight, the authors say.

Since Darwin proposed universal common ancestry (UCA) More than 150 years ago, the theory, though well supported, has remained beyond the scope of formal testing. But the author of a new letter in Nature says that the famous theory that underpins modern evolutionary biology has finally passed the first large scale quantitative hurdle.

Darwin proposed that, "all the organic beings which have ever lived on this earth have descended from some one primordial form." Over the last century and a half, qualitative evidence for this theory has steadily grown, in the numerous, surprising transitional forms found in the fossil record, for example, and in the identification of sweeping fundamental biological similarities at the molecular level.

Scientists from the Technische Universitaet Muenchen (TUM) and the University of Bayreuth say they have discovered how spiders form long, highly stable and elastic fibers from the proteins  stored in the silk gland. The results of their study are published in Nature.

Spider silk consists of protein molecules, long chains comprising thousands of amino-acid elements. X-ray structure analyses show that the finished fiber has areas in which several protein chains are interlinked via stable physical connections. These connections provide the high stability. Between these connections are unlinked areas that give the fibers their great elasticity.

Lasers can now generate light pulses down to 100 attoseconds thereby enabling real-time measurements on ultrashort time scales that are inaccessible by any other methods. Scientists at the Max Born Institute for Nonlinear Optics and Short Time Spectroscopy (MBI) in Berlin have now demonstrated timing control with a residual uncertainty of 12 attoseconds - a new world record for the shortest controllable time scale.

The word "adolescent" is defined as a young person; one who is at the stage between childhood and adulthood. The word means "lack" or "be short of", and it has been used by humanity since centuries ago for the young persons who are still short of maturity
.
All of us know that during this period of the life we are unable to think about the future consequences of our acting; therefore the need of the adult guide, someone who is able to understand the implications of the acts of the young.

It almost reads like an April Fools Day article.  A new UC Davis study has found that more obese people have minimum-wage jobs by demographic, adding to growing evidence that being poor is a risk factor for unhealthy weight.

Is the 'plants love CO2' theory valid?

Plants use CO2 from the atmosphere to grow.  It follows that more CO2 will promote more growth.  That is the gist of the 'plants love CO2' theory.  But is the theory valid?


In a recent article I argued that Plants Can't Sequester Excess CO2.
In this article I examine the matter further.

Sometimes I feel like there is a hook in my chest. It rips me from my current location and pulls me through time and space to places deep within my imagination. The sensation is physical and real, and always from my heart and lungs, not my head. Looking out the window of the airplane between St. Louis and Baltimore, my world spins and I suddenly find myself looking down on a vast Devonian sea.

A woman's touch tends to make us feel secure and increases our risk tolerance as a result, according to a new study in Psychological science. The authors believe this soothing effect originates during infancy, when children have a lot of physical contact with their mothers.

During the study, if a female experimenter patted a participant on the back, they'd risk more money on an investment or gamble than if she just talked to them, or if a man did the patting.