Introduction to Geography

For those of you who didnt do Geography in school, i just have to tell you, that Geography is about EVERYTHING.
I will chat about different topics that i happen to be studying at the time, and give you questions to think about by yourselves, or you can post your opinions in the comment box, as i would love to here from you!

Lets start off with a topic most of you should know about:

Topic 1: Renewable Energy.

We all know this business about global warming, which is basically the warming of the earth due to an increase in greenhouse gases from our cars and essentially cow pat. If some of you are still confused about greenhouse gases, just think of a greenhouse. The glass is our atmosphere and the earth is getting warmer and warmer inside from the sun. This global warming is melting our polar ice caps and all the cute little baby penguins are running out of land! We dont want that now, do we?
This is all happening from using too much energy sources like oil, gas and coal. Some people know of nuclear energy as a bad thing, but let me correct you. When nuclear energy goes right, its the cleanest and most efficient of all energy sources, using Uranium for nuclear fission with big explosions, and they harness the energy from the nuclear fission. Unfortunately i am not a scientist and dont know the details. But when nuclear energy goes wrong, it goes VERY wrong.
Some of you may have heard of Chernobyl in Russia. Basically it was a nuclear powerstation, that didnt get enough water to cool down the reactor due to what they think is human error, and it blew sky high! Sheep 100 miles away can't graze on the land from the radiation. Basically, it was very bad!
So, if like Greenpeace, you are against nuclear energy and the use of fossil fuels... then what else could we use?
Well, we could use wind energy? If anyones seen the big white fans in feilds, you'll know what i mean. The wind spins the fans to power the generator and get energy. Simple. But, they are very expensive and not that efficiant and retaining energy. Birds are even known to fly into them! Some might find that funny, but im sure the birds wouldn't!
We could use sun power. I'm sure everyone's seen a solar panel in their life. They absorb the energy from the sun's waves for power. But if we think about it, what happens at night?
We could use coal... Essentially the burning of air between rocks. But there is alot of transportation needed and the mining is pretty extreme. The greenhouse gas emissions are very high, so we'd possibly be going backwards a bit there.
Theres hydroelectric energy. They can turn rivers into dams and use the power of gravity on the water to turn the turbine and get energy. But it can dangerously effect the habitation of fish and small mammals. The poor little fish can get sucked into the turbine. Not pleasent. There is also an increased flood risk further upstream as the water has no where to go. Vigerous landscaping is involved in creating the dam using pipes etc. So is it worth it?
We could use Gas. Natural gas burning from oil and gas "feilds". The greenhouse gas emissions are less than coal, but gas in toxic to humans and must be kept in storage in huge underground caverns. But if you left it alone for thousands of years, it would essentially turn into lead, seeing as lead is the most balanced of particles...
Theres biomass, the transformation of organic matter into energy. This sounds like a good plan, but unfortunately the fertiliser added to the plant to speed up it's growth damages the soil and the greenhouse gas emission from the burning of the organic matter is the highest of any renewable resources.
Wave energy could be useful. This is the use of the sea to turn turbines as the waves break on the beach. But animals can be affected by this, and the building of platforms at sea is dangerous for sea creatures.
Geothermal energy is the use of warmth from the earths core to spin a turbine for energy. The drilling of holes to release the heat is very extensive and affects land stability. But the greenhouse gas emissions from this are very low.

So which do we use? Solar, wind, nuclear, coal, hydroelectricity, gas, biomass, wave or geothermality.

Let me know your opinions in the comment box!