energy sources


Fire was first discovered by man

122000 bc

humans first started using coal

2000 bc

Negative effects of coal and coal mining include:
Destruction of landscapes and habitats, deforestation and erosion, ground water contamination, chemical air and dust pollution, diseases from inhaling coal and greenhouse gas emissions

humans started using windmills to grind wheat

476 ad - 1350

hydroelectric power is used


although hydropower is non polluting the hydropower facilities have negaive impacts on the surrounding environment such as:
preventing fish migrations, changing the water temperature and water flow and a possibility of methane production in reservoirs.

petroleum is used for car fuel


nuclear power is used


Negative effects of nuclear energy include:
Radioactive material can be released in an accident and radioactive wasted is produced

wind electricity is used


solar power is used