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Development of renewable energy systems can certainly contribute to climate change mitigation. In many regions initiatives can be noticed to succeed in increasing the efficient usage of renewable energy resources such as hydro power, solar and wind energy as well as bioenergy. From these resources the bioenergy and the hydro power by their storage possibilities have the potential to counterbalance the temporal variability of solar and wind energy. Anyway, by applying such renewable energy resources it is possible ...

In the last century human society has registered huge development in all human-related fields, fact that has been possible without doubt by designing technological applications with the usage of diverse natural resources, especially energy ones. Anyway, recorded progress, especially in technological fields, was feasible because of using fossil fuels for electric and thermal energy supply, which resulted besides positive impacts in undesired environmental pollution. Currently most debated effect by CO2 emissions is...

Connected to the vision of bringing space closer to human beings, space tourism starts to become a new exciting free-time spending possibility allowing experiencing new unknown courageous activities linked to the possibility of viewing Earth from space. There are various types of space tourism such as orbital, suborbital and lunar ones. At the same time a big provocation for space tourists is to feel weightlessness and floating in space as the unique chance to contribute in a personal manner to advance science. As...