Definitions - b

The natural rate of extinction for a species. Contrasts sharply with Mass Extinction.

Substance, especially man-made, that pollutes or contaminates an environment.

A pesticide used to control or destroy bacteria, typically in the home, schools, or hospitals.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

The Barra system is a passive solar building technology developed by Horazio Barra in Italy. It uses a collector wall to capture solar radiation in the form of heat. It also uses the thermosiphon effect to distribute the warmed air through channels incorporated into the reinforced concrete floors, warming the floors and hence the building. Alternatively, in hot weather, cool nighttime air can be drawn through the floors to chill them in a form of air conditioning.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

The Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and their Disposal is an international agreement governing the handling of hazardous and other wastes.

Signed by 172 nations, the Convention has been in force since 1992 and makes it illegal to ship hazardous or landfill waste from one country for in another. It does not cover waste designated for recycling, which can be exported for processing abroad.

The emissions that would occur without policy intervention (in a business-as-usual scenario). Baseline estimates are needed to determine the effectiveness of emissions reduction programs (often called mitigation strategies).

Climate Science is the study of the behaviour of the climate using scientific techniques to discover provable processes and actions within the climate and hence be able to:

In agriculture and gardening, a beneficial organism is any organism that benefits the growing process, including insects, arachnids, other animals, plants, bacteria, fungi, viruses, and nematodes. Benefits include pest control, pollination, and maintenance of soil health. The opposite of beneficial organisms are pests, which are organisms deemed detrimental to the growing process.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

A metal hazardous to human health when inhaled as an airborne pollutant. It is discharged by machine shops, ceramic and propellant plants, and foundries.

59.3 percent - the theoretical maximum efficiency at which a wind generator can operate, by slowing the wind down. If the wind generator slows the wind down too much, air piles up in front of the blades and is not used for extracting energy.

Substances that increase in concentration in living organisms as they take in contaminated air, water, or food because the substances are very slowly metabolized or excreted.

A study of a living organism to measure the effect of a substance, factor, or condition.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

The accumulation of a chemical in tissues of an organism to levels greater than in the environment in which the organism lives.

Using natural means like predators to control pests, like growing ginger to repel snails and slugs and nasturtiums to ward off aphids, which are also food for ladybugs and lacewing moths. Goldfish placed in water storage containers eat incoming mosquitoes.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

Pollutants that are capable of decomposing under natural conditions.

Biodiesel is an alternative fuel produced from renewable resources such as plant oils, animal fats, used cooking oil, and new sources such as algae. Biodiesel contains no petroleum, but can be combined in any quantity with petroleum diesel to create a biodiesel blend. Biodiesel blends can be used in most "compression-ignition" (diesel) engines with little or no modifications. Biodiesel is simple to use, biodegradable, nontoxic, and essentially free of sulfur and aromatics (the "diesel" odor). (Biodiesel is not raw vegetable oil.)

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

A type of organic farming founded by Rudolf Steiner. It advocates treating a farm or garden as a unified ecological system, the use of mixtures of fermented herbs and minerals as soil additives, and following an astronomical calendar for planting and sowing.

A biofuel produced by the fermentation of plants rich in sugar/starch (e.g. sugar cane, corn).

Population of various microrganisms, trapped in a layer of slime and excretion products, attached to a surface.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

Global warming is the name given to the theory that there is increase in the average temperature of the Earth surface air and oceans since the mid-20th century and its projected continuation.

The exact mechanism of warming is not precisely understood, although it is strongly suspected that Greenhouse gases are to blame, as increasing concentrations of such gases help trap heat in the atmosphere and so raise mean temperatures.

Wikipedia Entry

Amount of dissolved oxygen needed by aerobic decomposers to break down the organic materials in a given volume of water at a certain temperature over a specified time period.

a method of controlling pests (including insects, mites, weeds and plant diseases) that relies on predation, parasitism, herbivory, or other natural mechanisms.

Technology that uses bacteria to consume waste/ organic materials.

The cumulative increase in the concentrations of a persistent substance in successively higher levels of the food chain.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

Entire community of living organisms in a single major ecological area.

The action of light on a biological system that results in the dissociation of a substrate, usually water, to produce hydrogen.

The proportion of sunlight energy that a photovoltaic cell converts to electrical energy.

The business practice of patenting seeds and other indigenously grown agricultural products.

An area comprising a natural ecological community and bounded by natural borders.

A process using organisms to remove or neutralise contaminants (e.g. petrol), mostly in soil or water.

Nutrient-rich organic materials derived from waste water solids (sewage sludge) that have been stabilised through processing.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

Bioswales are landscape elements designed to remove silt and pollution from surface runoff water. They consist of a swaled drainage course with gently sloped sides (less than six percent) and filled with vegetation, compost and/or riprap. The water's flow path, along with the wide and shallow ditch, is designed to maximize the time water spends in the swale, which aids the trapping of pollutants and silt. Depending upon the geometry of land available, a bioswale may have a meandering or almost straight channel alignment. Biological factors also contribute to the breakdown of certain pollutants.

Full wikipedia entry

Electromagnetic energy transmitted from the sun (solar radiation). The amount that reaches the earth is equal to one billionth of total solar energy generated, or the equivalent of about 420 trillion kilowatt-hours.

Solar energy is the major driver of Earth's environment. About one 1kw per hour per meter square makes it way to the ground. Changes in solar energy over extended periods contributes to environmental shifts (Ice Ages).

Technology that use living organisms to produce products such as medicines, to improve plants or animals, or to produce microorganisms for bioremediation.

Conversion of a substance into other compounds by organisms; including biodegradation.

Bisphenol-a (BPA) is an industrial chemical best known for making polycarbonate plastic and epoxy resins. Found in hard plastic water bottles and baby bottles, in coatings inside metal food and drink cans, and in paints, adhesives, dental sealants, computers, and other products. BPA is an estrogen-mimicking chemical that, in tests on animals, has been shown to interfere with the reproductive system.

In theory, a body that absorbs and emits 100% of the electromagnetic radiation that strikes it and therefore appears black. Graphite comes close, with all but 3% absorption.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

A bladder tank is basically a 'bag' made from reinforced PVC tarpaulin to hold water. These are often used under houses or buildings in the sub floor space to store rain water for use with irrigation or general water supply (such as for flushing toilets or washing clothes). Sizes vary from as little as 2000 litres up to 5000 litres

A wood product used for printed and graphically enhanced card stock, books, and packaging such as food cartons, microwave trays, beverages, candy, cosmetics, pharmaceuticals, and consumer electronic items. Pollutants, such as dioxins and furans, can result from processes that use chlorine in the manufacture of bleached board.

In the formulation of food products, the bliss point is the amount of an ingredient such as salt, sugar, or fat which optimizes palatability. 

There are numerous ways to add a layer of insulation between your interior living spaces and the outside world. Blown-in insulation (also called blown-in batt) is composed of loose insulating fibers such as fiberglass, foam, or cellulose. While rolled or batt insulation might leave voids through which air can pass, blown-in types tend to fill all crevices, making it a more energy-efficient choice.

Blown-in insulation is generally installed by a professional.

The amount of a chemical stored in the body at a given time, especially a potential toxin in the body as the result of exposure.

Climategate refers to release/leak/stealing of emails, data and programs related to research into global warming by UEA's Climate Research Unit (CRU); that occurred in 2009 before the Copenhagen Climate Conference (and was therefore probably contributory to its failure). The information obtained was made publicly available for all to see and read through.

It indicates that there good reason to conclude:

• Problems with data retention and archiving;
• Weakly documented data processing both in terms of process and actions undertaken.
• A 'closed ranks' mindset to external criticism and freedom of information
• Close interdependent relationships between a small set of international researchers leading to peer review and career advancement support occurring within the group.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

The chemical element commonly used as the dopant in a solar photovoltaic device or cell material.

Containers meant to receive beverage bottles which people drop off to be recycled.

Boxes of locally grown or organic food and produce, delivered to people's houses.

Mixed fresh and salt water.

A home-built wind generator design by Hugh Piggott of Scotland.

Addition of chlorine to water until there is enough chlorine present for disinfection of water.

Term coined by World-changing writer Alex Steffen to refer to those who believe the way to achieve sustainability is through technological innovation. As opposed to dark greens and light greens.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.

Obsolete electronic products, such as radios and televisions.

A brown search refers to the act of looking for information on recycling and sustainability on the internet. Most 'green' search engines are also able to perform this function as they will index such sites (as the EcoWho search engine does).

A plant cultivated for its triangular grains, which are protected by a hull. This crop is generally grown without herbicides and pesticides.

The entire perimeter of a building enclosed by its roof, walls and foundation. Properly designed, the envelope can minimize temperature gain or loss and moisture infiltration.

Building Orientation refers to positioning of a property or building with respect to the Sun, usually done to maximize solar gain at the appropriate time of year when required. This is to reduce heating costs and improve quality of living in the property concerned.

Also called building felt or housewrap; used in the construction of frame houses to block drafts and moisture. Building paper is applied in layers over a house’s walls and sheathing, with the top courses overlapping the bottom courses so that water drains off the wall.

Serious and diagnosable health conditions, usually of the respiratory system, that can be attributed to specific air quality problems within a building.

A Passive House is a house designed to use Passive Solar Design principals to drastically reduce its energy demands by making full use of the energy supplied by the Sun, this thereby reduces ecological footprint of the building.