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21-30 of 48 for the Category : Health and the Subcategory : Human Health

Noise Pollution

( Article Type: Explanation )

There are different levels of noise all around us all of the time. When it appears to be very quiet there it still a background noise, even if it is crickets chirping or a gentle breeze blowing. All of the different day-to-day noises are collectively

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Nuclear Energy ~ The 'Anti' Position

( Article Type: Opinion )

Eskom plans to build, use and sell over 200 reactors to create a potential export business. This will mean more waste buried at Vaalputs and hundreds of trucks carrying radioactive materials on our roads. What follows are 10 reasons why nuclear pow

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Nuisance

( Article Type: Explanation )

In environmental terms, a nuisance is something that causes irritation and distress (e.g. a bad smell, or a loud or piercing noise, or a continuously barking dog) but not necessarily to the degree that it contravenes laws or regulations.

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Organic Farming

( Article Type: Explanation )

Organic farming is the way that our food was grown for thousands of years and is nothing new. What IS new is the indiscriminate use of chemical fertilizers, herbicides and pesticides that are now being used to grow our food.

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Oxygen

( Article Type: Explanation )

Oxygen is a colourless, odourless, tasteless gas that is essential to life on earth. Its most important compound is water (H2O).

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Ozone

( Article Type: Explanation )

The ozone layer occurs in the upper atmosphere (strato-sphere) surrounding the earth. It protects life on earth by absorbing most of the harmful ultra-violet rays (such as UV-B radiation) coming from the sun before they reach the earth.

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Paint

( Article Type: Explanation )

Natural paints are made from renewable natural ingredients that are safe to use as they avoid toxic substances and safe to throw away as they are 100% biodegradable.

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Particulates

( Article Type: Explanation )

Particulates is the term used to describe either particles of solid matter or droplets of liquid that are small or light enough to remain suspended in the atmosphere for short periods of time.

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Pesticides

( Article Type: Explanation )

Pesticides can be categorised as a diverse group of chemicals that kill insects.

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Photochemical Smog

( Article Type: Explanation )

Photochemical smog comprises a number of chemicals, mainly ozone, aldehydes, peroxyacetylnitrates (PANs) and nitric acid.

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