World of Biology on Instagram: "Muscle Contraction explained 💪 Ever wonder what powers every lift, stride, and sprint? You’re looking at actin and myosin filaments sliding within the sarcomere, the fundamental unit of muscle contraction. 🧬💪 Triggered by calcium, fueled by ATP this molecular ballet is what makes movement possible, from flexing in the gym to resuscitating in the ICU. Muscle gains start at the microscopic level. Video via @biologianonucleo #muscle #musclebuilding #musclemass #sc

Hope and Haven Refugees on Instagram: "📍 Korma – North Darfur | November 1, 2025 A total of 160 families (around 900 people) have arrived at Silk Camp for displaced people in the Korma Administrative Unit, coming from El Fasher. Most are women and elderly people, and some were injured by gunfire while fleeing the ongoing bombardment and violence. These families are now living in extremely harsh humanitarian conditions, without shelter, sufficient food, or medical care. Children and women are in