Evolution of the Atmosphere

EARTH'S ATMOSPHERE IS unique in the solar system: of all the heavenly bodies, Earth alone has an atmosphere capable of supporting life. An appreciation of this highly specialized nature of the contemporary atmosphere is vital to understanding its evolution. The atmosphere has not always been the way it is today, and the present atmosphere is almost certainly not directly related to Earth's primordial atmosphere. The contemporary atmosphere arose from thermal and geological processes occurring some time after Earth's formation, and its evolution to a life-supporting state is intimately linked to the evolution of life itself.

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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