meh
I dont know about the rest of the world, but I cant just switch my power provider so that its Hydro electicity,
Also, Hydro Dams also cause damage on the surounding ecosystem...look in Quebec about it, alot of forests have been flooded and destroyed.
yea duuuude!!!
yes. i share your opinion. yeah so what?. afew jobs are lost. but think of the planet!. we are using water to make power!
1:it saves money
2:it doesn't emit any fumes
3:its less dangerous
& 4: it will give the ozone layer a break!
...
"I know this is a "pro" documentary - we call that "propaganda"..."
-ecthelion83
ummm...
did you know that even though it might be a renewable source, but every time a gallon goes through a dam .001 gallons of water are lost. nuclear doesn't harm or endanger anyone, if and only if, there are properly trained engineers around to ensure that no one will get hurt. and also what happens when the dams are abandoned? they brake, cause flooding, kill millions. hydro is okay, but needs a more watchful eye than anyother kind of electricity production.
a few things...
I know this is a "pro" documentary - we call that "propaganda" if it comes out of some place whose aims are contrary to ours. That being said, it was a decently technical explanation, but it fails to address some of the drawbacks of hydro power, the first of which is the reservoir itself, which is essentially a man-made lake. In effect, in order to create a hydroelectric power source, one has to dam up a natural body of water such that the reservoir ends up being a pool of standing water (let's not forget that standing water is a perfect breeding ground for mosquitoes, which spread disease).
The second issue here is that the reservoir often floods land that was previously inhabitable. China has had to relocate hundreds of thousands of people for its hydroelectric projects, most recently the Three River Gorges project. In other places of the world, much of the land that will be flooded by such dams may contain ancient relics and archaeological pieces of interest that have yet to be discovered.
Third, because there are certain geologic requirements for hydroelectric power (i.e. the need for some form of a waterfall) and because it's not as high-yield as other power sources, there isn't enough livable space to spare on the planet to create enough hydroelectric dams to power the world's energy needs.
There are more issues, but those are the major problems. This is practically propaganda, and while fairly technical (I was an engineering undergrad, so that appeals to me), it is over the top in terms of sentimentality ("switch to hydroelectric power today!") and isn't a fair (you said it yourself; it's a "pro" documentary) representation of hydroelectric power itself.