7.1.Environmental impact assessment
Any proposed new technological project should include an environmental impact assessment.There should also be an assessment of the economic and social repercussions of the project before any important decisions are made.
7.2. Effects on the environment
Extracting natural resources
Fossil fuels and radioactive elements , such as uranium, must be extracted from underground deposits.
Large areas of forest have been destroyed to provide wood for fuel.
Transporting fuel
Most oil is transported over land through pipelines and by sea in large ships called oil tankers.
Natural gas is transported over land through gas pipelines or bu sea in tankers as liquid natural gas (LNG).These tankers are call LNG carriers.
Generating electricity
Hydroelectric power stations require large amounts of water which must be stored behind dams in reservoirs.
Waste treatment
Filters can reduce pollutants , such as nitrous oxide and sulphur.
Low-sulphur coal can also be used to reduce sulphur emissions.
Large forests should be protected because they remove CO2 from the air.
Nuclear waste is kept in special containers with thick walls that block radiation.These containers are stored in nuclear graveyards,which are usually located underground or in deep ocean trenches.
Most of our electricity comes from power stations that use non renewable-energy sources.This situation has negative effects on the environment and the most serious is climate change a problem that is associated specifically with fossil fuels.
Fossil fuels and radioactive elements , such as uranium, must be extracted from underground deposits.
Large areas of forest have been destroyed to provide wood for fuel.
Transporting fuel
Most oil is transported over land through pipelines and by sea in large ships called oil tankers.
Natural gas is transported over land through gas pipelines or bu sea in tankers as liquid natural gas (LNG).These tankers are call LNG carriers.
Generating electricity
Hydroelectric power stations require large amounts of water which must be stored behind dams in reservoirs.
Waste treatment
Filters can reduce pollutants , such as nitrous oxide and sulphur.
Low-sulphur coal can also be used to reduce sulphur emissions.
Large forests should be protected because they remove CO2 from the air.
Nuclear waste is kept in special containers with thick walls that block radiation.These containers are stored in nuclear graveyards,which are usually located underground or in deep ocean trenches.
7.3. CLIMATE CHANGE
Most of our electricity comes from power stations that use non renewable-energy sources.This situation has negative effects on the environment and the most serious is climate change a problem that is associated specifically with fossil fuels.
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