The floating city Ark 2.0 is designed to be inherently buoyant and powered entirely by renewable energy. It is divided into zones connected by elevated cycling highways. Vertical farms produce food without relying on imports. Green roofs and a titanium oxide membrane help regulate climate. Walkable neighborhoods and central hubs encourage low-carbon living. Inspired by Noah's Ark, Ark 2.0 aims to sustain life even as sea levels rise due to climate change.