# Lena

By [Untitled](https://paragraph.com/@0xf9a153e2e76cb986ffbe9e08e7f2b8d2d7fe2c66) · 2024-04-28

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How do Layer 1 solutions like Ethereum 2.0 and Cardano's Ouroboros aim to address scalability, security, and sustainability?

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*Originally published on [Untitled](https://paragraph.com/@0xf9a153e2e76cb986ffbe9e08e7f2b8d2d7fe2c66/lena)*