Is Climate Change All

Warmer weather sounds pleasant. A return to the climate of the medieval warm period (see "The medieval optimum" on pages 79-86) would make farming thrive. Barley and wheat would ripen much farther north than they do today. Farming communities could return to Greenland for the first time in more than 1,000 years.

Unfortunately, the global climate is complicated and the effects of a general rise in temperature are not easy to predict. The most important changes are those affecting agriculture and wildlife.

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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