Did you know that whale sharks can grow longer than school buses? They are the world's largest fish. Discover these and other interesting facts in Whale Shark.--

"Sabas que tus oídos trabajan hasta cuando duermes? Los perros pueden or sonidos que tú no puedes. Descubre estos y otros datos interesantes en El oído."--Bookdepository.com

Did you know that rockets burn fuel to make gas? The gas moves out of the rocket and pushes it up. Discover these and other interesting facts in Space Rockets

Did you know that polar bears spend more time underwater than any other bear? Polar bears live in the Arctic where it is very cold. Learn these and other interesting facts in A Polar Bear's World.

"Sabas que el olfato puede cambiar lo que sentimos? El olfato tambin puede advertirte de un peligro. Descubre estos y otros datos interesantes en El olfato."--Blackwells.co.uk

Did you know that some animals sleep all winter to stay warm? When it is summer in some places, it is winter in others. Discover these and more intriguing facts in Seasons.

Did you know that skyscrapers are often more than 100 stories tall? These large buildings sway in the wind. Discover these and other interesting facts in Skyscrapers.

Did you know that guinea pigs first came from South America? Today, they are very popular pets. Discover these and other interesting facts in “Guinea Pigs”.

Did you know that hummingbirds can be very small? The bee hummingbird is the world's smallest bird. Discover these and other interesting facts in Hummingbirds. Hummingbirds is part of the new EYEDISCOVER collection of AV2 books.

Did you know that wildebeests are also known as gnus? Wildebeests are part of a group called antelopes. Learn these and other interesting facts in “All About Wildebeests”.