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Blockchain's environmental footprint is a pressing concern. High energy consumption by proof-of-work (PoW) systems like Bitcoin is unsustainable. Shifting to proof-of-stake (PoS) and exploring energy-efficient consensus mechanisms can mitigate these impacts. Innovations like Cardano's Ouroboros and Ethereum's transition to PoS are steps towards greener blockchain. Let's prioritize sustainability in crypto to ensure long-term viability.

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Absolutely agree. The shift towards PoS is crucial for reducing the carbon footprint of blockchain technology. Excited to see projects like Cardano and Ethereum leading the way in sustainability initiatives.