The First Molecular Keypad Lock

How can defense or intelligence agencies safeguard the security of top-secret data protected by a computation device the size of a single molecule?

With cryptography approaching that sobering new era, scientists in Israel are reporting development of what they term the first molecular system capable of processing password entries. Abraham Shanzer and colleagues describe their "molecular keypad lock" in the Jan. 17 issue of the weekly Journal of the American Chemical Society.

Study gives us a new perspective on the powerful

Walking a mile in another person's shoes may be the best way to understand the emotions, perceptions, and motivations of an individual; however, in a recent study appearing in the December 2006 issue of Psychological Science, it is reported that those in power are often unable to take such a journey.

Mechanism Of Hallucinogens' Effects Discovered

The brain mechanism underlying the mind-bending effects of hallucinogens such as LSD, mescaline, and psilocybin has been discovered by neuroscientists. They said their discoveries not only shed light on the longtime mystery of how hallucinogens work, but that the findings also offer a pathway to understanding the function of drugs used to treat neuropsychiatric disorders, which are now being used largely without an understanding of their fundamental mechanism.

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Mathematics Of Cloaking: New Analysis Improves Methods To Render Objects Invisible

The theorists who first created the mathematics that describe the behavior of the recently announced "invisibility cloak" have revealed a new analysis that may extend the current cloak's powers, enabling it to hide even actively radiating objects like a flashlight or cell phone.

Allan Greenleaf, professor of mathematics at the University of Rochester, working with colleagues around the globe, has announced a mathematical theory that predicts some strange goings on inside the cloak—and that what happens inside is crucial to the cloak's effectiveness.

Rutgers geneticists propose biotech crop containment strategy

Plant geneticists at Rutgers, The State University of New Jersey, may have solved one of the fundamental problems in genetically engineered or modified (GM or GMO) crop agriculture: genes leaking into the environment.

Impact Of Rainfall Reaches To Roots Of Mountains

Impact Of Rainfall Reaches To Roots Of Mountains

The erosion caused by rainfall directly affects the movement of continental plates beneath mountain ranges, says a University of Toronto geophysicist — the first time science has raised the possibility that human-induced climate change could affect the deep workings of the planet. Diagram showing plate movements due to erosion. (Image: Russell Pysklywec)

Implicit Stereotypes And Gender Identification May Affect Female Math Performance

New research may provide insight as to why, despite progress over the last few decades, women remain underrepresented in math-heavy majors and professions.

In an article published in the January issue of Psychological Science, psychologists Amy Kiefer of the University of California, San Francisco and Denise Sekaquaptewa of the University of Michigan point to an interaction between women's own underlying "implicit" stereotypes and their gender identification as a source for their underperformance and lowered perseverance in mathematical fields.