> So what does that mean? And is it actually caused by fossil fuels? Or some other thing. And if it is what does it do? Last I heard the ice caps were growing and larger than in recent memory except for a section being melted by volcanic activity.
You've mis-characterized that article, but that's besides the point.
The way science works is this: 1. Scientists examine some phenomenon. 2. Scientists make a hypothesis about why the phenomenon is the way it is. 3. Scientist seek out new information that may support or refute the hypothesis. For example, scientists trying to prove Einstein's theories used a solar eclipse to determine if light is in fact bent by gravity. In the case of climate change, scientists typically seek out new and historical data to see if it confirms their theories. 4. Based on the new information, the hypothesis is confirmed, discarded or modified. 5. The process is repeated as long as necessary to fully understand the phenomenon. Which may take a very long time.
So today, we have a reasonably good understanding of climate change. Meaning we have confirmed that the earth is getting warmer, that the warming is due to rising CO2 levels, and that rising CO2 is largely a consequence of burning massive quantities of fossil fuels. And we have sufficient evidence to indicate that global warming will have dire consequences to our planet if it is left unchecked.
That is not to say we understand everything there is to know about climate change, as the article you cited indicates. That article is just one data point, and scientists are studying it to understand what it means. But one data point that is contrary to thousands of other data points does not disprove our basic hypotheses about global warming. It just means we don't fully understand it. And it certainly doesn't mean we don't have to worry about climate change.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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