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...
The Panama Canal is one of the greatest engineering achievements in human history, a waterway that reshaped global trade and connected two mighty oceans. Stretching across the Isthmus of Panama in Central America, this canal has become a vital artery for international commerce, saving ships thousands of miles of travel. 🌊 A Gateway Between Oceans Before the canal’s construction, ships traveling from the Atlantic to the Pacific had to take the long, perilous route around Cape Horn at the southern tip of South America . The completion of the Panama Canal in 1914 changed everything, offering a shortcut of about 8,000 nautical miles . ⚙️ The Engineering Feat Building the canal was no easy task. It took decades of planning, failed attempts, and eventually, the successful effort led by the United States after 1904 . Engineers faced challenges such as: Rugged terrain and tropical jungles Deadly diseases like malaria and yellow fever Massive excavation projects to cut through m...