Melatonin Brochure Melatonin  is a hormone produced by the body that regulates many physiological processes. MELATONIN supplementation is a controversial issue and I hope to help readers understand the facts so that they are not misled by wild claims. Melatonin is a hormone produced by the pineal gland, which is situated at the base of [...]

Blue Light Threatens Animals and People 07 October 2009 – The rapidly expanding use of bluish-white outdoor lighting threatens visibility at night and jeopardizes the nocturnal environment worldwide. This surge is fueled by the promise of energy savings and reduced lighting maintenance. The demand for energy efficient lighting is a laudable imperative. This effort has [...]

White Lighting Solution This brochure gives you an indication of the many ways in which white light can transform urban streets at night. And by ‘transform’ we don’t mean only aesthetically, but also in terms of safety, security and energy efficiency. The brochure is divided into two sections. The first section gives a general overview [...]

A Silent Cry of Light Pollution Many of us live in a world of urban constellations, unable to see the stellar constellations a moderately dark sky would provide. We should ask ourselves whether this is the legacy we wish to leave our children. The dark sky is a natural resource that should be protected. The [...]

Colin Henshaw and Graham Cliff believe that light pollution is reducing the numbers of insects on which many birds rely In 1994, the Journal of the British Astronomical Association carried a letter from one of the authors (Colin Henshaw) entitled The Environmental Effectsof Light Pollution. The letter concluded by predicting that the anticipated reduction in [...]

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ALL LIVING THINGS adjust their behaviour according to natural light. Man’s invention of artificial light has done much to enhance our night-time environment but, if not properly controlled, obtrusive light (commonly referred to as light pollution) can present serious physiological and ecological problems. Obtrusive Light, whether it keeps you awake through a bedroom window or [...]

Martin Wainwright Friday November 21, 2003 The Guardian Over-anxious Britons are placing a blind, almost medieval, faith in brighter streetlamps and security lighting as crime deterrents, according to a statistical analysis which raises questions about Home Office research. Government advice that surveys in Britain and the US show better lighting to have “no negative effects [...]

Researchers at a science conference in the US have produced more evidence to show how nighttime activity may increase the incidence of breast cancer. Their findings presented to the meeting of the American Association for the Advancement of Science in Denver suggest shift-workers may be particularly at risk from the disease. It adds further to [...]

Light pollution is ‘any adverse effect of man-made light including sky glow, glare, light trespass, light clutter, decreased visibility at night, and energy waste’. (International Dark-Sky Association). In other words, Light pollution is the inefficient, uneconomical use of light, use that sends light wastefully toward the sky or light that provides so much glare you [...]