You can count numbers all around you, from the eight legs on a spider to the one nose on your face.

But can you count the stars in the sky or the fish in the Amazon?

Find out all about PLANTS in THE BIG COUNTDOWN, including the many different types and species, photosynthesis, flowers, pollination and seeds, how plants grow and how we depend on plants for food and many other products.

Discover some amazing facts from the tallest tree to the most poisonous seeds. The Big Countdown looks at popular topics and investigates the great many numbers that make them fascinating.

From the mind-bogglingly large to smallest and most precious, this series helps us understand that it's not just our days that are numbered.