But they aren’t even the primary reason why I don’t invest in crypto. I don’t like cryptocurrency because it doesn’t meet the 4 M’s, which, if you’re a Rule #1 investor, you know is the way we evaluate a company to know that it’s worthy of our investment and will grow our wealth.  Safe crypto “We find no evidence that Bitcoin mining is becoming more sustainable over time,” said economist Benjamin Jones of the University of New Mexico in a statement. “Rather, our results suggest the opposite: Bitcoin mining is becoming dirtier and more damaging to the climate.” (Jones and his two coauthors declined interview requests from Mongabay.)

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