Scientists, psychologists and other medical experts have been trying to understand the dream process for decades. While they have made significant progress in recent years the mysterious world of dreams still fascinates us. One of the driving forces behind the study of dreams is the belief that they mean something and have a definite purpose [...]

A song by Carol King from the 1960s included the line, “I feel the earth move under my feet.” She was singing about how some people feel when they are in love, though I don’t believe that love causes the earth to move. But we will definitely feel movement during an earthquake.
Our planet seems [...]

In very basic terms, the answer to this question has to be: Fluid builds up in our lungs for several different reasons. But we don’t have to leave it in this undefined state because medical research has uncovered most, if not all, of the reasons for this condition.
One result of such research proposes that the [...]

Understanding why copper turns green requires at least a basic knowledge of oxidation and of the word “patina.” Patina is commonly defined as a film or thin coating that forms on some metals, such as bronze and copper. But it can also be the same type of thin layer that forms on wood furniture after [...]

While most of us have experienced the waviness and lack of clarity that occurs above a hot surface (such as a highway in the summer) many of us don’t understand just what happens to produce this phenomenon. The heart of the matter lies in a process called refraction. Light that enables us to see travels [...]

Certain forms of alcohol are excellent antiseptics because the chemical makeup works to slow and/or stop the growth of some viruses, bacteria and fungi. Scientific texts indicate that this occurs because ethyl alcohol causes proteins to coagulate. Essentially, the structure of alcohol allows it to get inside these small organisms and stop them from growing. [...]

Whether we consider the movement and relationship between the Earth and its Moon coincidence or part of the grand design, the fact remains that the two bodies are closely connected. Our modern calendar is loosely based on the Moon’s rotation of slightly less than 30 days. In addition to the Moon making a complete rotation [...]

In very basic terms, the velocity at which sound moves is only slightly affected by the speed of the wind. A key to understanding how moving air affects sound lies in the word “moderate.” Many of us have had the experience of hearing sounds created at long distances if the air is still and cool. [...]

In general, things float on water or other liquids because they don’t have as much mass as the water. Simply put, objects that float are less dense. Because stones, bricks, non-porous metals etc. have more mass they displace the water and sink.
Water freezes at 32 degrees Fahrenheit and when it does it becomes less dense [...]

We may be able to answer this simply by saying that we sweat because we have to, in order to keep our bodies working properly. But this doesn’t cover the details of how we sweat and what triggers the activity at certain times.
The human body has many sweat glands in the skin that create [...]