Kad5 said:
Thanks man I appreciate it.
So Global warming causes hotter summers AND colder winters right?
Also, my republican classmates claim that the whole global warming thing exists so certain people can make a profit out of it?
What the heck do I say to that?
When we say global warming we're usually talking about greenhouse gases. What's happening is that when we have a certain amount of CO2 (there are others, people just talk about CO2) the heat that the Earth gives off is trapped and reflected back to Earth instead of being released into space. So no, it doesn't give us colder winters, it gives us warmer everything.
There is no one who will deny that greenhouse gases exist or anyone who will deny that they are necessary. Without them we would be frozen right now. The problem is that CO2 levels are at a point that is higher than it has been in the last 600,000 years (CO2 levels fluctuate naturally, our planet changes climate naturally, but it has NEVER been this quickly before. It takes millions of years to raise the temperature of our planet half a degree Celsius. So even if the culprit isn't CO2 emissions, something is WRONG with our climate, something is throwing it completely off.) We know what the CO2 levels (and other atmospheric conditions) were in the past because of ice cores which have ancient air bubbles trapped in them. We date the ice then measure the air inside to see.
People who claim that the whole global warming thing exists that certain people can make a profit are... right in some sense, but global warming is a real thing. Of course the people who pioneer new technologies will make money, but it's important to understand that the people want to dispel the idea that global warming exists are also people who want to make money.
Take this example:
http://www.nytimes.com/2010/09/17/us/17pollute.html?_r=1
California passed a bill to curb greenhouse gases that are produced by factories/companies in order to become more environmentally friendly. Now on the upcoming ballot, we have Prop 23 which wants to delay the greenhouse gas law until unemployment hits about 5% (as the article says, this is pretty rare and passing this prop will basically kill the greenhouse law). The "idea" behind it is that energy companies will have to spend a lot to make their production cleaner and that this spending will cause them to lay more people off to afford it. Sounds kinda believable?
So, who is behind this prop? Civil groups who want to create more jobs? Nope, 95% of the 8 million raised to support this prop. comes from people who are/connected to the energy industry.
If the public believes in global warming, it's going to be VERY costly for oil/coal/natural gas companies. Those fuels just burn dirty (especially coal), there is only so much you can do to make them clean, it becomes very expensive for them. The people fighting to keep people ignorant want to avoid having to spend money because of environmentally friendly laws. Big business doesn't give a fuck about the environment, they care about the bottom line. It's the tragedy of the commons, everyone in the world has to suffer the negative consequences of sticking to fossil fuels, but the oil companies get to sit pretty on top of mounds of cash. And anyone who tells you anything about money trickling down from the rich to the poor can go jump off a cliff. The rich are getting richer and the poor are getting poorer, and this problem is just getting worse because now the American people are now championing stupidity as the solution to their problems.
Just a quick piece of math for you. The highest guess for how much oil there is left on the planet that we can reach is provided by the U.S. Geological Survey. They say it's about 3 trillion barrels. Two other sources say about 1.2 trillion and 1.6 trillion.
Globally, we use 80 million barrels a day (American uses 20 million, fuck yeah!). If we use the HIGHEST estimate of 3 trillion and just do simple division we come out that we have about 100 years of oil left.
However, we haven't taken into consideration that the rate we consume oil is increasing (currently at about 2% a year) and also that our global population is exponentially growing and also that China and India are upcoming industrial powers which want to use magnitudes more oil than they already do to support their people.
With all these things put together, a conservative estimate puts us at around 35-55 years before we run out of oil. Fun times, eh? I guarantee that we will see a shit storm about this in our life times.