 Hi, I'm Varun Dubey and I'm head of blockchain at Lab45ipro. There's a lot of research going around sustainability because given that blockchain has many nodes and it's stored the same amount of data in every node, right? But yes, I think there is a lot of research happening on pruning the consensus mechanisms to make it faster and less CPU hungry. For example, if you see proof of stake, which has recently Ethereum has moved on, I think these kind of things will make them more and more sustainable. Look at Hydra Hashgraph, the whole Hashgraph algorithm is very sustainable in nature. So yeah, there is a lot of research happening as we speak across multiple protocols. And I think with this whole green focus everywhere, every protocol is working on making it less and less taxing on the compute and the storage across the world.