What is the continental shelf?

Sigmund Freud’s original term for the unconscious mind was not id but es, the indefinite pronoun it in German. Freud borrowed that term from a physician, Georg Groddick, who in turn had borrowed it from his teacher Ernst Schweninger. As Freud’s ideas became popular in English-speaking countries, translators felt that simply calling the unconscious it…

Both stalagmites and a stalactites are elongated deposits of minerals at points where slowly dripping water enters a void. Stalagmites build from the bottom of such a cavity; stalactites hang from the ceiling. When the same dripwater source creates both a stalactite and a stalagmite, the two may meet and form a column.

No, long-term constipation does not cause poisoning. There are several cases on record in which fecal material has been stored in the bowels for over a year without causing any ill effects. Aside from the discomfort of carrying around an extra 60 to 100 pounds of weight.

Quicksand doesn’t work by pulling you down. Quicksand is nearly always found above a spring, which creates a supersaturated condition that makes the sand frictionless and unable to support weight. In addition, quicksand is airless, which creates suction as you struggle to get free. The most effective way to escape quicksand is to position yourself…

There are about 200 million to 300 million sperm cells are contained in an average human ejaculation. Yet sperm cells make up only 2 to 5 percent of total sperm volume. The rest is composed of fluids, known as seminal plasma, that help keep the sperm cells alive.

A common ingredient in many laundry detergents, optical bleaches (“fabric brighteners”) act by reflecting blue light. The blue light combines with the yellow discoloration in a fabric to produce white light that makes the fabric seem brighter.