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A drop or droplet is a small column of liquid, bounded completely or almost completely by free surfaces. A drop may form when liquid accumulates at the lower end of a tube or other surface boundary, producing a hanging drop called a pendant drop. Drops may also be formed by the condensation of a vapor or by atomization of a larger mass of liquid. Surface tension Liquid forms drops because the liquid exhibits surface tension...

Biologically, a child (plural: children) is generally a human between the stages of birth and puberty. Some vernacular definitions of a child include the fetus, as being an unborn child. The legal definition of "child" generally refers to a minor, otherwise known as a person younger than the age of majority...

Charged with developing an interesting campaign for the U.K.’s National Health Service, graphic designer Derek Bowers developed a visually stimulating ad series themed around alcohol labeling. The concept being that sexually transmitted diseases are often the consequence of ill-informed decisions made while under the influence. The resulting designs are both visually stimulating and informative, if not even a little humorous...

A roof is the covering on the uppermost part of a building. A roof protects the building and its contents from the effects of weather. Structures that require roofs range from a letter box to a cathedral or stadium, dwellings being the most numerous. In most countries a roof protects primarily against rain. Depending upon the nature of the building, the roof may also protect against heat, sunlight, cold, snow and wind...