Station / Airport guide. Paris Charles de Gaulle Airport (Roissy) is located 23 km north of Paris and eases your journey in France and beyond with its own transport hub which provides fast and frequent train services.
Drops of sweat. Sweat is a liquid that is made by the skin when the body is hot. Sweat is made in sweat glands under the surface of the skin, and it comes out of tiny holes in the skin called pores. Sweat is mostly water, but it also contains some salts. The body makes sweat to cool itself down. The sweat takes the heat from the body when it evaporates (turns to gas).
Sweating is the primary method of cooling the body; the evaporation of this sweat from all over the body cools the naked skin. During a really hot day in the desert, however, a human will lose as much as 12 liters (a little over 3 gallons) of water through sweat.