That is complete BS. The last I checked we were just over 380ppm, which is the highest it has been in over 650,000 years....
Carbon dioxide level highest in 650,000 years
so basically what that's saying, is that the level of CO2 650,000 years ago was higher than it is today.
for all u guys that think global warming is BS, you need to learn some earth science. since there is more and more c02 in the atmosphere temperatures on earth are rising
Then why were people 50 years ago worried about another ice age?
If you look at charts much longer than the last century, you'll see that CO2 actually lags behind global temperature by about 800 years.
In the Earth's history, it is the temperature that changes first.
then CO2 follows.
Temperature increases, then 800 years later, CO2 does.
Temperature decreases, then 800 years later, CO2 does.
The oceans actually absorb and release CO2, depending on temperature (if you've studied Chemistry, think of equilibrium reactions)
since the oceans occupy a very large volume, and are a lot more dense than the atmosphere, and because it's a lot harder for the sun's energy to reach the lower depths of the ocean than the atmosphere, it takes a long time for the overall temperature of the oceans to change - and thus, a long time for CO2 to be released from the oceans. 800 years long, in fact.
But the point is, Earth's history has shown that temperature doesn't follow CO2.
The only time it has, is in the last 40 years. And that doesn't automatically mean CO2 is causing it to change. It just means that CO2 has risen at the same time as temperature in the last 40 years. But so have other variables.
Take a look at this for example:
the number of pirates (real pirates, not software pirates) has decreased, while global temperature has increased. Does that mean the absence of pirates are
causing the temperature to rise?
hint why the polar ice caps are melting.
Because it's warmer now than it was 50 years ago. Which doesn't mean it's going to continue to get warmer.
You can't draw a straight line ahead of a current trend, and expect the graph to follow your line. That's how many people lose in the share market.
and since there melting the level of the ocean is going to go up
Actually, the expansion of the sea water due to heat has a much bigger effect on water level than ice melting.
And Earth's history has shown us that sea level changes with temperature changes (even with higher temperatures than we're experiencing now) haven't been nearly as big as some people are saying it will.
ahh, hickfarm, if the earth isn't even 100,000 years old then whats with all the Dinosaur skelitons all over the place.
I agree that the earth is much older, but that's a big can of worms.
i don't mean to be a know a it all Nagasam, but space is not infinite
How do you know?
it is just expanding very fast.
You can still expand an infinitely large plane.
which is where?
Nobody has been able to point out an "end" of the universe.
Which doesn't mean the universe is or isn't infinite, but I prefer not to make assumptions.
*note
I've quoted Luke a fair bit in this post. I'm just going to say that it's nothing personal. It was just easier to post my opinion this way.
