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Blockchain's environmental footprint is a growing concern. The energy consumption of Proof of Work (PoW) systems like Bitcoin is staggering, raising questions about sustainability. However, solutions are emerging. Proof of Stake (PoS), for instance, drastically reduces energy use. Innovations like sharding and layer-2 solutions promise to make blockchain more eco-friendly. It's crucial for the crypto community to embrace these sustainable practices to ensure the future of blockchain technology.