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.
The Adelie adÃ©lie (Penguin pygoscelis) adeliae is a species of penguin common along the Entire antarctic, coast which is their only. residencehe Adelie adÃ©lie (Penguin pygoscelis) adeliae is a species of penguin common along the Entire antarctic, coast which is their only. residence