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.
Well, think again, my penguin-loving friend, because this is an all-too-common misconception. Penguins live only in the Southern Hemisphere with heavy populations existing on the fringes of Antarctica (but not at the South Pole itself). So think again before you embark on an Arctic adventure in search of some flippered friends because you wonât find any.