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Earth science
Many scientists are now starting to use an approach known as Earth system science which treats the entire Earth as a system in its own right, which evolves as a result of positive and negative ... > more -
Energy and the Environment
Renewable Energy
Solar Energy
Geomagnetic Storms
Environmental Science
Sustainability
Solar power
Solar power (also knows as solar radiation or insolation) is energy from the sun. This energy, in the form of heat and light, supports all life on Earth, drives the Earth's climate and weather and is ... > more -
Wind Energy
Renewable Energy
Energy and the Environment
Environmental Science
Energy Technology
Energy Policy
Wind power
Wind power is the conversion of wind energy into more useful forms, such as electricity, using wind turbines. At the end of 2006, worldwide capacity of wind-powered generators was 73.9 gigawatts; ... > more -
Peptide bond
A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). This is ... > more -
Crane (machine)
A crane is a tower or derrick equipped with cables and pulleys that can be used both to lift and lower materials and to shift them horizontally. Cranes are commonly employed in the construction ... > more -
Renewable Energy
Nuclear Energy
Energy and the Environment
Weapons Technology
Environmental Science
Hazardous Waste
Nuclear power plant
A nuclear power plant (NPP) is a thermal power station in which the heat source is one or more nuclear reactors. Nuclear power plants are base load stations, which work best when the power output is ... > more -
Surface tension
Surface tension is an effect within the surface layer of a liquid that causes the layer to behave as an elastic sheet. It is the effect that allows insects (such as the water strider) to walk on ... > more
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