In the vast stretches of the Nefud Desert in northern Saudi Arabia, getting lost can quickly become a matter of life or death. Every year, dozens of people go missing in this unforgiving environment, often just a few hundred meters from water sources they are unable to locate. To address this tragedy, explorer and environmentalist Mohammed Fohaid al-Sohaiman al-Rammali came up with a simple yet brilliant idea: installing solar-powered laser beacons near water sources.

In this ranking, the 10 cleanest cities in the world in 2025, where cleanliness is not just a priority, but a true way of life.

By 2030, it aims to modernize its infrastructure, improve transportation, and increase green spaces.

Flow Earth is at the forefront of global decarbonization efforts, offering innovative solutions.