INDICATORS OF CLIMATE
Indicators of Climate Change
Is the Climate Changing ?
"Scientific evidence for warming of the
climate system is unequivocal."
Intergovernmental Panel on Climate Change (IPCC)
What is global warming about ?
Where do we get energy
Fossil-fuel sources of energy:
During earlier periods of the Earths history,
fossilization of biological material created th
Materials produced by metabolic activities of
biological systems and/or products of their
decomposition or conversion.
The materials are based on carbon compounds.
Biomass is collected and stored solar energy.
The use of wind energy dates back to ancient times
when it was employed to propel sailboats.
Extensive application of wind turbines seems to have
originated in Persia where it was used for grinding