This past April 9, the folks at Earth Unplugged released yet another video, and I for one find it quite entertaining, not to mention informative. The video, available below, answers one very simple question that odds are many people have asked themselves over the years: why it is that our planet's seas and oceans are salty. According to this Earth Unplugged video, our planet's oceans contain about 3.5% salt. This means that they are home to approximately 15 million billion tons of salt. ...
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