Greenhouse effect

The greenhouse effect is the change in the thermal equilibrium temperature of the planet by the presence of an atmosphere with gas that absorbs and emits infrared radiation. Gases like water vapor, carbon dioxide and methane.

Melina Luís

Landfill

A landfill is a local for the disposal of waste materials by burial and is the oldest form of waste treatment. Landfills have been the most common methods of organized waste disposal and remain so in many places around the world.
There is alternatives to landfills are waste reduction and recycling strategies, like anaerobic digestion, composting, mechanical biological treatment, pyrolysis and plasma arc gasification, etc.

Melina Luís

PETA

PETA- People for the Ethical Treatment of Animals
Is an organization who defends animal rights - "Animals are not ours to eat, wear, experiment on, or use for entertainment."
more information, click www.peta.org

Melina Luís

Veganism

The veganism is a lifestyle, which excludes food from all animal products. As in vegetarianism, people choose this style of eating, for health, for animals, for ethical reasons or for reasons related to the environment.

Andreia Timóteo

Vegetarianism

Being a vegetarian is to have a diet which does not include meat, fish and poultry. People choose to become vegetarians for several reasons, among which we can point out ethics, religion, environmental causes, working conditions, economic, psychological, or even cultural issues.

Andreia Timóteo

Ozone layer

The ozone layer has changed over the past 25 years, as the reduction of its thickness in Antarctica and, more recently, also in the North Pole. This is called the ozone hole.
The main responsability goes to the CFC's and HCFC's, although these are less common.

Andreia Timóteo

Fast evolution and selfish minds

Imogen Heap - Hide and Seek

"Where are we? What the hell is going on?
The dust has only just began to fall
Crop circles in the carpet, sinking, feeling
Spin me around again and rub my eyes
This can't be happening
When busy streets a mess with people would stop to hold their heads heavy
Hide and seek
Trains and sewing machines?
All those years they were here first
Oily marks appear on walls
Where pleasue moments hung before
The takeover, the sweeping insensitivity of this
Still alive
Hide and seek
Trains and sewing machines?
Oh, you won't catch me around here
Blood and tears they were here first
Mm, what you say?
Oh that you only meant well, well of course you did
Mm, what you say?
Mm, that it's all for the best
Of course it isMm, what you say?
That it's just what we need
You decided this
Mm, what you say?
Mm, What did she say?
Ransom notes keep falling at your mouth
Mid-sweet talk, newspaper word cut outs
Speak no feeling no i don't believe you
You don't care a bit you don't care a bit
You don't care a bit
You don't care a bit
You don't care a bit
You don't care a bit
You don't care a bit."