Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating.
Emperor penguins owe their scientific name (Aptenodytes forsteri) to their discoverer, the first natural scientist to reach Antarctica, the German Johann Reinhold Forster. Forster came to Antarctica in 1770, on Captain James Cook's ship, and saved Cook's life during the voyage.
Distribution and abundance. Adelie adÃ©lie penguins are one of only five species of penguins that live on The antarctic (Continent, adelie, adÃ©lie, emperor gentoo chinstrap and). Maccaroni penguins they are closely related To (The gentoo) pygoscelis papua And (The chinstrap) pygoscelis. antarctica penguinsdelie adÃ©lie penguins were discovered in 1840 by scientists on The French antarctic expedition led by Explorer Jules dumontâD. urvilleâD urville Named Adelie, land in Southern, antarctica after his, Wife. Adele AdÃ©le scientists Hombron and jacquinot also attributed this name to. the species