about 50 years.
Wind power has been used for thousands of years, dating back to ancient civilizations that used windmills for grinding grain and pumping water. Modern wind power, in the form of large-scale wind turbines for electricity generation, has been around since the late 19th century.
they have been around since about 1789 when there were stories of blood sucking monsters
Slavery has been around since the 1600's and is still going on.
I believe the Chinese culture has been around about 3,700 years.
1100 years
hydro electric power has been believed to have said that it lasts for around 50-70 years
As long as you have rain, yes.
about 50 years.
Too long. Damns built will most all double as hydroelectric power plants. But there could never be enough power from hydroelectric to make it a soloution.Fusion power will become a reality long before this. Which isn't too far off anyways. 2012 look up the ITER facility in Switzerland.
This is renewable energy, it uses water to push the turbine that powers the generator that makes electricity, so as long as there is water there will be Hydroelectric power. :)
It has been around since my mom walked the earth with the dinosours
Hydroelectric power. Wind power. Solar power. Trees. Even Oil over the very long haul may be renewable.
More reliable than most other forms of electricity. Water flows down hill. As long as the lakes and rivers that are feeding the hydroelectric station don't dry up, they will always generate electricity. You will never run out of gas or uranium or coal to power the plant.
how long has deforestation been around
As long as guns have been around.
There are 3: Glen Power, Danny O'Donoghue and Mark Sheehan.
how long has the london eye been around for