THE CRA PERSPECTIVE • EARTH SCIENCE How Much Water Is There on Earth? Can our planet ever run out of water? Exploring Earth's enormous water reserves, the freshwater shortage and the future of humanity. Water is one of the most extraordinary and essential resources on our planet. Our planet is called the Blue Planet for a reason. Approximately 71% of Earth's surface is covered by water. But does that mean we have an unlimited supply of water for human survival? Look at the oceans, rivers, lakes, glaciers and countless streams across the world. Water seems almost endless. It falls as rain, flows through rivers, disappears into the ground, freezes into ice and rises into the atmosphere as water vapour. Yet billions of people experience water shortages. Some communities struggle to obtain safe drinking water, groundwater reserves are declining in several regions, and pollution is making important water sour...
Better Cities, Better Lives On 31 October , the world marks World Cities Day , initiated by UN-Habitat in 2014. This important international day aims to promote sustainable urban development and raise awareness about challenges and opportunities faced by cities around the world. With over half of the world’s population now living in cities, urban spaces have become the beating heart of culture, economy, innovation—and inequality. From bustling metropolises to emerging towns, World Cities Day calls on all of us to reflect on how we can create inclusive, resilient, and sustainable urban environments. 🌍 Why Cities Matter Cities are where ideas are born, art thrives, and communities form. But they also face issues such as: Overpopulation Pollution and climate risks Housing crises Transportation inefficiencies Inequities in access to services World Cities Day encourages us to reimagine urban life and build cities that serve everyone —not just the privileged few. ...