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Left Nostril Right Brain

A recent experiment performed by researchers at Philadelphia's Monell Chemical Senses Center, probably the world's pre-eminent institution devoted to the study of smell, showed that the world smells different through your two nostrils. When the participants in the experiment sniffed through their left nostril, connecting to their left brain, they ...

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LeftNostrilRightBrain
Astronomy

Reading The Colors of the Spectrum

Did you ever wonder how scientists can tell us so much about distant stars, for example, the surface temperature or chemical makeup of a star, light years away from Earth? Scientists can only use what ... Continue reading

SpectrumColors
Geology

What are Hoodoos?

Hoodoos or Goblins are one of the most spectacular displays of erosion. They are geological formations, rocks protruding upwards from the bedrock like some mythical beings, conveying the story of ... Continue reading

WhatareHoodoos
Engineering

Moore's Law

Intel is the corporate giant known for manufacturing semiconductors, also called computer chips or integrated circuits (ICs), and its Pentium Processor. But Intel is also known for laying down the ... Continue reading

MooresLaw
Engineering

Red Dot Replacing Cross Hairs

A bullet fired from a gun becomes subject to the pull of gravity and begins to fall the instant it leaves the gun barrel. The farther away from the gun the bullet travels, the lower to the ground it ... Continue reading

RedDotReplacingCrossHairs

Coffee: Beverage Of Sedition

CoffeeBeverageOfSeditionCoffee is the most popular drink in the world, consumed regularly by about one-third of the global population. Tea runs a close second. And then, of course, there's Coca-Cola. Why are coffee, tea, and cola so popular? They all contain caffeine, which acts as a stimulant -- just like the closely-related alkaloids cocaine and nicotine. Also like those other chemicals, caffeine raises levels of dopamine, a neurotransmitter that activates the brain's pleasure centers. Caffeine is addictive, too, so once you start drinking it regularly it's hard to quit. Symptoms of caffeine withdrawal include a severe headache that can last for several days.

As a stimulant, caffeine can push the brain and body into heightened alertness, and by raising dopamine levels it can serve as a powerful motivator. That's why employers offer free coffee to their employees. But things have not always been that way. In both Asia and Europe, holders of power have tried to ban coffee houses as places where 'idle and disaffected persons' get together to discuss politics.

A 17th-century traveler quoted in Hugh Johnson's history of wine noted that the Turkish Vizier had tried to ban coffee houses because they were 'melancholy places where Seditions were vented, where reflections were made on all occurrences of State, and discontents published and aggravated.' At around the same time, England's King Charles II issued a proclamation banning coffee houses as places where 'divers false, malicious and scandalous reports are devised and spread abroad to the defamation of his Majesty's Government.' (The English proclamation also banned the selling of chocolate, sherbet, and tea.) Needless to say, the popularity of coffee houses proved far greater, and far more enduring, than that of the King and Vizier.