Millennium Energy Solution

Isaac Asimov is one of the writers of science fiction’s most famous and was one of the best popularizers of science that existed. When we talk about greenhouse gases we can not refer to the explanation given in his book, 100 basic questions about science

Think now in a glass house outdoors in full sun. Visible light from the sun breaks through the glass and no more is absorbed by objects that are within the house. As a result, these objects are heated, as are heated outside, exposed to direct sunlight

The objects heated by sunlight give back the heat as radiation. But not to the temperature of the sun, do not emit visible light, but infrared radiation, which is much less energy. After a while, give the same amount of energy as they absorb infrared in the form of sunlight, so its temperature remains constant (although, naturally, are warmer than if they were not exposed to the direct action of Sol).

Outdoor objects have no difficulty getting rid of infrared radiation, but the case is very different for objects in the sun inside the glass house. Only a small part of the infrared radiation emitted able to pass the glass. The rest is reflected on the walls and builds up inside.

The interior temperature of objects rises much more than the exterior. And the temperature inside the house increases until the infrared radiation is filtered by the glass is enough to establish equilibrium.
After that wonderful explanation, impossible to match, is what consequences it brings have a planet like ours having a greenhouse effect.

We saw what it produces in a single greenhouse, where the greenhouse used to grow crops. But on a planetary scale can also be given the greenhouse effect because certain gases in the atmosphere can retain the energy emitted by the ground when heated by solar radiation, as in the glass cage.

Today on earth, there is global warming due to this greenhouse effect because gases (called greenhouse gases) and carbon dioxide and methane, act as the glass in a greenhouse crop, retaining the heat of otherwise would have gone to space. So the higher the concentration of these gases in the atmosphere, the less radiation you can go into space. And these gases are the product of human action.