ScienceIQ.com

The Strange Spin of Uranus

Directional terms like north and south make sense here on Earth. The north and south axis of the Earth is relatively perpendicular to the plane of the Earth's orbit around the sun. Actually, Earth's axis of rotation is 23.5 degrees from the vertical. The variance from the vertical is what causes our seasons. ...

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UranusSpin
Geology

Is Earth Getting Fatter Around the Belt?

Besides being used for transmission of this email message to you, communication satellites are used for some neat science. By shooting a laser beam onto them and measuring how long it takes for light ... Continue reading

EarthBelt
Chemistry

Hydrogen - The Simplest Element

Hydrogen is the simplest element; an atom consists of only one proton and one electron. It is also the most plentiful element in the universe. Despite its simplicity and abundance, hydrogen doesn't ... Continue reading

Hydrogen
Geology

When This Lake 'Burps,' Better Watch Out!

Nearly twenty years ago, two lakes in Cameroon, a country in Africa, 'burped,' killing hundreds of people. What makes a lake burp? Lake Nyos and Lake Monoun are unusual lakes. They each formed in the ... Continue reading

LakeBurps
Astronomy

A Satellite Of Our Own

The regular daily and monthly rhythms of Earth's only natural satellite, the Moon, have guided timekeepers for thousands of years. Its influence on Earth's cycles, notably tides, has also been charted ... Continue reading

ASatelliteOfOurOwn

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.