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.
Penguins are found in many areas in the southern hemisphere. Most people think of penguins as living in very cold climates like the icy continent of Antarctica, but they also live in more temperate areas like the Galapagos Islands, Australia, and South Africa.Penguins are very funny animals. They are birds that cannot fly, but love to swim!ost people think of penguins as living in very cold climates like the icy continent of Antarctica, but they also live in more temperate areas like the Galapagos Islands, Australia, and South Africa. Penguins are very funny animals.