Source: cnnphotos.blogs.cnn.com via Greg on Pinterest
Monday, July 16, 2012
What is a vortex?
It is hard to describe one. What is a vortex? Tornado is an awesome example, but they are typically not visible to the naked eye. Perhaps you have seen it. Steven Gibbs talks about a mist that is green. Almost like a fog - pea soup.
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