Wikipedia : Light pollution



Wikipedia : Light pollution Related

Wikipedia : Pollution:: Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat, or light. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring; when naturally occurring, they are considered contaminants when they

New Jersey Astronomical Association (NJAA): Light Pollution:: Offers a variety of definitions and links related to light pollution.

Wikipedia: Water Pollution:: Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans and groundwater). Water pollution affects plants and organisms living in these bodies of water; and, in almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities. Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remo

Thirsty Light:: The Thirsty Light is an intuitive digital plant moisture sensor designed to be unobtrusive when left in the soil of a plant where it continuously monitors conditions, testing the moisture level once per second. The Thirsty Light blinks an LED light to alert the user when it's time to water. With the Thirsty Light, you'll never have to guess when your plants need watering.

Light Leaf Spot:: Photograph and symptoms of this foliar disease of oilseed rape, its biology and advice on control measures.

Green Light Trust:: Promotes environmental education through positive action: running workshops for U.K. schools, planting woodland in local communities, and saving rainforest communities in Papua New Guinea.

Solar Electric Light Fund:: non-profit charity which promotes solar rural electrification and energy self-sufficiency in developing countries.

WEELS - Wind Erosion on European Light Soils:: Aims and final report of the completed EU study.

Wikipedia: Winter:: Overview of the season of winter, with information on its meteorological aspects, causes, symbolism, mythology, and ecology. Also includes winter snow and ice activities. Winter is the coldest season of the year in temperate climates, between autumn and spring. At the winter solstice, the days are shortest and the nights are longest, with days lengthening as the season progresses after the solstice. Details information may be obtained from the

Wikipedia : Bioregionalism:: Bioregionalism is a political, cultural, and environmental system or set of views based on naturally-defined areas called bioregions, or ecoregions. Bioregions are defined through physical and environmental features, including watershed boundaries and soil and terrain characteristics. Bioregionalism stresses that the determination of a bioregion is also a cultural phenomenon, and emphasizes local populations, knowledge, and solutions. Details inf

  • New Additions: Light
Dark Skies Awareness: An IYA2009 Cornerston Project
Sensible and Efficient Lighting to Enrich the Nighttime Environment (SELENE)
Hawaiian Astronomical Society: Why You Can't See the Stars