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.
(Zebra sharks are often called leopard sharks in Australia, but they are a different species from the leopard sharks found off the west coast of North America.) The 20-something shark at Reef HQ Great Barrier Reef Aquarium in Townsville laid 41 eggs without a father. Three of them hatched into healthy pups, all female.