I suppose it means capturing energy and using it for useful purposes. I don't think 'harnessing' is a good description, except in forms like hydro or wind, where the energy exists and we do have to collect it. Mostly energy is released by human activity, burning fossil fuels or using uranium, and if we didn't release the potential it would stay unused.
non-polluting
It is usually referred to as solar power.
The process of harnessing energy from the ocean's tide is very similar to that of harnessing water through a hydroelectric dam. As the turbines turn they create energy. This happens both as the tide comes in and as the tide goes out. The turbines' energy is then routed to storage generators and sent out through power lines to feed the power needs of the community.
The French get the majority of their electricity by containing and harnessing the energy from splitting atoms. So yes, it's very doable.
The newest forms of renewable energy include work with solar energy, hydrogen as well as work with harnessing the power of the ocean waves. Renewable energy technology is incredibly important in solving our energy crisis.
Nuclear Power
coastal areas
photosynthetic cells
It is an example of renewable energy.
non-polluting
Fusion reactions release tremendous energy
Short answer: Heat Geothermal energy is heat from within the earth.
If you have a list it will be something to do with collecting methane from a landfill site.
battery charging shoes
See the WANO website at the related links below.
Hydro-electric
ADP to ATP by harnessing the energy of hydrogen ions.