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But unlike the low probability of losing your house to fire, we know that the Arctic is warming. And this study offers an inkling of what it could cost us - if we don't act. "No matter how you slice it, these are big numbers," says Goodstein. "The Arctic air...
If scientists at CERN are able to locate the Higgs particle in the early years of this new century, it would shore up the basic scientific tenet that what exists at the very foundations of our universe is beauty and unity. It's something to continue to strive for, at...
In 1982, Scientific American published an article suggesting that snorting cocaine was no more addictive than eating potato chips. People continue to use when the stuff is around, and simply stop when it's gone, the researchers argued. The paper was later widely denounced for minimizing the risks of what...
But what shocked the researchers was that extended-access rats also showed deficits in their "reward threshold." That is, unrestricted exposure to large quantities of high-sugar, high-fat foods changed the functioning of the rats' brain circuitry, making it harder and harder for them to register pleasure - in other...
The extended-access rats also showed a lowered level of a certain type of dopamine receptor in the brain, which is thought to contribute to pleasure-seeking behavior in humans. "Human cocaine addicts, people who are obese, alcoholics and heroin addicts also show a down-regulation of this dopamine D2...