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How were Roman roads built?

While the concept of roads had existed for hundreds of years prior to the Romans, it was through the Roman Republic’s – and later Roman Empire’s – …

Roads

How did water mills work?

Water mills were – and in rare circumstances still are –facilities in which moving water was used as the driving force to power a milling apparatus. …

How do homing missiles always stay on target?

<b>Missile tech has come on leaps and bounds since the unguided V-2 rockets of WWII, but how do these explosive devices navigate today?</b><p>Modern missiles …

Drugs and Their Conformations

A drug will bind with a biological receptor if the drug possesses a specific three-dimensional arrangement of functional groups, called a …

FDA

Polymers What are They?

Low-molecular-weight alkanes (such as<br>methane or ethane) are gases at room temperature, alkanes of<br>slightly higher molecular weight (such as hexane and …

Chemistry

Cyclopropane as an Inhalation Anesthetic

In the mid-1840s, surgeons began utilizing the anesthetic properties of diethyl ether and chloroform<br>to anesthetize patients during surgery:<p>Despite …

Medicine

The Sense of Smell

In order for an object to have an odor, it must release organic compounds into the air. Most plastic and metal items do not release molecules into …

Asymmetry

Explosives

Explosives are compounds that can be detonated, generating sudden large pressures and liberating excessive heat. Explosives have several defining …

Do Living Organisms Violate the Second Law of Thermodynamics?

Students often wonder whether life is a violation of the second law of thermodynamics. It is certainly a legitimate question. Our bodies are highly …

Beer Making

Beer making relies on the fermentation of sugars (produced from grains such as wheat or barley). The fermentation process produces ethanol and is …

Beer

Viral Science Facts