i-weather.org is an international consortium that has set itself the goal of creating the world’s first artificial climate to satisfy the metabolic and physiological requirements of a human being in an environment completely removed from all earthly influences: virtual reality, the disruption of the body clock that comes with air travel, and extra-terrestrial trips and holidays. Accessible everywhere and to everybody thanks to the Internet, i-weather.org makes it possible to live in a situation completely removed from natural locations by producing an artificial circadian rhythm synchronised to match the inner cycle of the human hormonal and endocrine system. In the absence of the natural terrestrial cycle of day and night, it becomes apparent that this inner cycle in fact lasts 25 hours, and that body temperature, the alternation between sleep and wakefulness, and the accumulation and secretion of substances such as cortisone and oligopeptides, all depend on it. i-weather.org has therefore put together the first specifically human climate. Version 1.0b, launched on 26 October 2001, will be improved on a continuous basis as and when scientific knowledge of biological rhythms increases. The beta version of i-weather.org 1.0b operates solely on the basis of fluctuations in the rate of melatonin, which in turn is influenced by variations in the intensity of light received by the retina. i-weather.org 1.0b acts as a kind of personalised artificial sun, oscillating over a 25-hour period between a maximum light intensity of 509 nm and a minimum intensity close to that of ultra-violet.

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