Solar thermal energy is a technology used for harnessing solar power for practical applications, from solar heating to electrical power generation. Solar power plants generate electricity by converting solar energy to heat. This is one of the most cost-effective renewable energy systems and can significantly reduce your utility bill.
There are numerous diverse types of ecosystems in existence. The tundra, marine ecosystems such as a coral reef and the rainforest are just three examples of more than twenty different ecosystems that we are aware of and interact with on a regular basis. Your garden and surrounding area is an ecosystem and by its very definition, even the busiest city is a bionetwork. One area of the ecosystem that is of worldwide concern today is that caused by deforestation due to the sudden and rapid population growth.
If you have a lake or pond near your home, you may visit often to observe the animals and plants living there. In addition, while this may seem like a natural ecosystem, the body of water may very well be man-made. There are also a number of places you can go, such as a natural science museum in your area or aquarium that will teach you more about the way animals live, but these creatures are not in their original habitat.
Earth Hour 2009 takes place, starting at 8.30 local time, on Saturday 28 March 2009. It will start at 8.30 pm in New Zealand and work it’s around the world, much the same as New Years Eve does.