Negative Attention is Better Than No Attention at All

To give and receive attention is a fundamental human need. In the 13th century, King Frederick II of Sicily wanted to find out what language children would naturally grow up to speak if they were never spoken to. He took babies from their mothers at birth and placed them in the care of nurses who were strictly forbidden to either speak to or touch them. The babies, as it turned out, didn’t grow up to speak any language, as they all died of attention deprivation within a fortnight of the sta...

 How Poverty Affects IQ

In a series of experiments, the researchers found that pressing financial concerns had an immediate impact on the ability of low-income individuals to perform on common cognitive and logic tests. On average, a person preoccupied with money problems exhibited a drop in cognitive function similar to a 13-point dip in IQ, or the loss of an entire night's sleep. But when their concerns were benign, low-income individuals performed competently, at a similar level to people who were well off, said...

 Exercise Rejuvenates the Body

As noted earlier, mitochondrial degradation is a primary culprit in dwindling muscle mass. But recent evidence indicates that exercise can slow down this effect. According to Mark Tarnopolsky, a professor of pediatrics and medicine at McMaster University in Hamilton, Ontario, resistance training activates a muscle stem cell called a satellite cell. In a physiological process known as ‘gene shifting,' these new cells cause the mitochondria to rejuvenate. Tarnopolsky claims that after six mon...

 How to Disguise a Helium Atom as a Hydrogen Atom

Donald Fleming of the University of British Columbia in Vancouver, Canada, and colleagues managed to disguise a helium atom as a hydrogen atom byreplacing one of its orbiting electrons with a muon, which is far heavier than an electron. Because it is so heavy, the muon sits 200 times closer to the helium nucleus than the electron it replaces and cancels out one of the nucleus's positive charges. The remaining electron then behaves as if it were orbiting a nucleus with just one positive ch...