Humans have launched so much to space that it's actually polluting Earth's atmosphere, a new study found

Humans have launched so much to space that it's actually polluting Earth's atmosphere, a new study found

When something enters Earth's atmosphere, it's typically in a fiery blaze.solarseven/Getty Images <ul> <li>Scientists have discovered evidence of various pollutant metals in Earth's stratosphere.</l… [+1984 chars]

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