![]() With the discovery of fire, humankind was the first time able to supply heat and light when needed. People use energy in different forms, as heat, as mechanical energy, and as light. In both strategies, heat and cold storage will play an important role. The use of renewable energy sources and 2 increased energy efficiency are the main strategies to achieve this goal. It is commonly accepted today that we have to reduce the use of fossil fuels to cut down the dependency on the supply countries and to reduce CO emissions. In spring 2008, the oil price rose beyond 100 $/barrel for the first time in history. At the same time, the supply of fossil energy sources like coal, oil, and natural gas becomes less reliable. ![]() The new IPCC report makes clear that - mankind plays a dominant role on climate change due to CO emissions from en- 2 ergy consumption, and that a significant reduction in CO emissions is necessary 2 within decades. ![]() ![]() The years 20 mark a dramatic change of peoples view regarding c- mate change and energy consumption. ![]()
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