Is Web3 really the future of the consumer internet? Its two main components–crypto and the metaverse–are each highly controversial, and burdened by considerable hype. Yet they both also promise enormous potential, if utilized wisely. But will they be? This lively discussion between two tech industry experts asked not only whether Web3 is sustainable as a concept and framework, but whether it is sustainable in the other critical modern sense–is it a net positive for a world burdened by the global warming?