Atrial Fibrillation Overview. Atrial fibrillation is an irregular heartbeat that increases the risk of stroke and heart disease. Signs include dizziness, weakness, and fatigue. Treatment involves medication and lifestyle changes, and sometimes procedures such as cardioversion, ablation, pacemakers, or surgery.
Amy Shark. Amy Shark is a singer-songwriter and producer reigning from the Gold Coast of Queensland, Australia. She crafts enveloping, emotional and deeply relatable indie pop that first garnered attention after her pop award recognition in the Queensland Mic Awards.
The bull shark, also known as the Zambezi shark in Africa, and Lake Nicaragua shark in Nicaragua, is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. The bull shark is known for its aggressive nature, predilection for warm shallow water, and presence in brackish and freshwater systems including estuaries and rivers. Bull sharks can thrive in both salt and fresh water and can travel far up rivers. They have been known to travel up the Mississippi River as far as Alton, Illinois, although few freshwater human-shark interactions have been recorded.