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    earth's atmosphere
    • McDonald's (MCD) Stock: Tasty, Empty Calories

      McDonald's (MCD) Stock: Tasty, Empty Calories

      Kiplinger via Yahoo Finance· 11 hours ago

      Cattle in the company's supply chain serve up a double portion of climate impact: As cows digest, they emit methane gas, which is 25 times more powerful...

    • Could People Breathe The Air On Mars?

      Could People Breathe The Air On Mars?

      IFLScience· 7 days ago

      Let’s suppose you were an astronaut who just landed on the planet Mars. Oxygen is in the air we breathe here on Earth. In fact, only 21% of our air is...