Much of the technical discussion about blockchains to date has been about designing new consensus algorithms for better scalability. Meanwhile, state growth is an important but little-discussed issue and is an existential threat to the growth of the industry if left unsolved. Ethereum 1.0, for instance, can only sustain state growth for three more years.Fortunately, there is a lot of great research being done by different teams to solve the state growth problem. Ethereum is working on state rent and state pruning; Nervos is working on "cap and trade" state storage; and Cambrian Tech is working on stateless blockchain clients.Read more in our latest piece: The State Growth Problem Facing Blockchains