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...
Every year on November 10 , the world observes World Keratoconus Day , a global health initiative dedicated to raising awareness about keratoconus , a progressive eye disease that affects the cornea . 👁️ What is Keratoconus? Keratoconus is a condition in which the normally round cornea (the clear front surface of the eye) thins and gradually bulges into a cone-like shape. This irregular shape prevents light from focusing properly on the retina, leading to: Blurred or distorted vision Sensitivity to light and glare Frequent changes in eyeglass prescriptions Severe cases that may require corneal transplant It often develops in adolescence or early adulthood and progresses over time, affecting daily life, education, and career opportunities. 🌍 Why World Keratoconus Day Matters Awareness Saves Sight: Early detection and treatment can slow progression and protect vision. Advancing Research: Promotes global collaboration in improving treatments like corneal cross-...