Institute of Human Anatomy on Instagram: "The Sound of Severe Arthritis: Cartilage vs Bone-on-Bone Listen closely to this real knee joint dissection - the difference in sound tells the whole story. WHAT YOU'RE HEARING: Tapping on remaining cartilage = cushioned sound Tapping on exposed bone = hard, direct contact This is severe arthritis where the protective cartilage has worn away completely in some areas, leaving bone grinding directly on bone with every movement. BEYOND ARTICULAR CARTILAGE: A

How Things Look on Instagram: "High temperatures have a powerful effect on the Earth’s systems. When the atmosphere warms, glaciers and polar ice begin to melt at faster rates, leading to rising sea levels. This change can flood coastal areas, erode shorelines, and disrupt habitats for wildlife and people alike. Warmer conditions also alter rainfall patterns, causing some regions to experience more intense storms while others face long droughts. Heat also stresses ecosystems and the plants and a