New research suggests that Earth's first crust, formed over 4.5 billion years ago, already carried the chemical traits we associate with modern continents. This means the telltale fingerprints of ...
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MomsWhoSave on MSNEarth Day is This Month: 4 Simple Ways to Teach Your Kids About Our PlanetTeaching our kids about the planet, its resources, and how to appreciate and protect them is one of the most important t ...
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