Author Archives: Guest Post

Coyotes “Shrank,” Wolves Did Not, After Last Ice Age and Megafaunal Extinctions

*Once large and wolf-like, coyotes ultimately became much smaller*

When the last ice age ended more than 10,000 years ago, many large species of mammals went extinct and others underwent changes in appearance. (more…)

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Hyperactivity in Brain May Explain Multiple Symptoms of Depression

*Electrical signals can’t shut off, suggest UCLA researchers*

Most of us know what it means when it’s said that someone is depressed. But commonly, true clinical depression brings with it a number of other symptoms. These can include anxiety, poor attention and concentration, memory issues, and sleep disturbances.

Traditionally, depression researchers have sought to identify the individual brain areas responsible for causing these symptoms. But the combination of so many symptoms suggested to UCLA researchers that the multiple symptoms of depression may be linked to a malfunction involving brain networks — the connections that link different brain regions.   (more…)

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Disappearing and Reappearing Superconductivity Surprises Scientists

Washington, D.C. — Superconductivity is a rare physical state in which matter is able to conduct electricity—maintain a flow of electrons—without any resistance. This phenomenon can only be found in certain materials at low temperatures, or can be induced under chemical and high external pressure conditions. (more…)

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IBM Research Nanophysics Breakthrough Captures First-Ever Image of Charge Distribution in a Single Molecule

— Scientists use special kind of atomic force microscopy at low temperatures and in ultrahigh vacuum to image the charge distribution within a single molecule
— The new technique will further the understanding of nanoscale physics and could help develop future applications such as solar photoconversion, energy storage, or molecular scale computing devices

ZURICH – 27 Feb 2012: IBM scientists were able to measure for the first time how charge is distributed within a single molecule. This breakthrough will enable fundamental scientific insights into single-molecule switching and bond formation between atoms and molecules. The ability to image the charge distribution within functional molecular structures holds great promise for future applications such as solar photoconversion, energy storage, or molecular scale computing devices. (more…)

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Family and Peer Relationships Essential to Mexican-American College Students’ Success, MU Researcher Says

COLUMBIA, Mo. – Hispanics are enrolling in the higher education system at a greater rate than ever, yet they are less likely than their non-Hispanic peers to enter college or earn degrees, according to the Pew Hispanic Center. A new study by a University of Missouri researcher found that Mexican-American college students’ family and peer attachments are associated with prosocial and physically aggressive behaviors that can affect their success in college. (more…)

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