The smallest planet in our solar system is also the closest to the sun. That means on Mercury, one year is just 88 days long! Discover more facts about the small but mighty Mercury.

The only planet to support life, Earth has a lot going for it. Think you know everything there is to know about our home planet? Think again. Discover more about the blue planet we call home.

Mars is famous for its red colour, but the fourth planet from the sun has more than that going for it. Discover more interesting facts and secrets about the famous &quote;red planet&quote;.

The second brightest object in the sky after the moon is Venus. It's also the only planet named after a woman. Learn more about bright, beautiful Venus, named after the Roman goddess of love and beauty.

Wrasses that can change from female to male! Anglerfish that glow under the sea! Some fish have found extreme ways to adapt to their environments. Discover some of the most interesting and unusual adaptations in fish that have allowed them to survive all over the world.

Leatherback sea turtles face one of their lives’ biggest challenges as soon as they’re hatched. Crawling out of their eggs on the sandy shore, they hurry to the sea in a race to escape those who see them as a tasty meal. If they survive and thrive, they can grow longer than an adult male is tall and weigh as much as a small car! Learn more about these amazing animals, including where they live, what they eat, the many challenges they face in their lives, and what you can do to help.

There’s more than just dirt below! Readers will learn about the layers and types of soil underground. Rocks, clay, sand, silt and all nonliving things underground are explored. Earth's core, mantle, and crust are also discussed. Readers will also discover why we could not live without dirt, and why we need to protect it.

When it comes to battle, some animals seem to be natural warriors. They may have spines or armor to fend off predators, or horns made to attack. Enemies that mess with these animals are in for an unpleasant surprise.

Hippos may look cute, but keep your distance! These huge animals use their fast running speed and long canine teeth to defend their territories and their young. Find out why these beasts are Africa’s deadliest mammals.

Readers will learn just how amazing sea anemones can be. The many species of this ocean invertebrate may not look like other undersea animals, but they have some amazing adaptations and behaviors that help them survive. Without faces, limbs, bones, blood, or a brain, sea anemones have incredible ways eating, moving, reproducing, and defending themselves.

Pounce! A puma springs from the shadows and leaps on its prey. Its powerful claws and sharp teeth do the rest. Learn how these sleek wildcats stalk and find their next meal.

What looks like a sea horse covered with leaves? It’s the sea dragon! Learn all about this real-life dragon that lives in the ocean off the coast of southern Australia. Life science curriculum links are covered throughout. Critical thinking questions using the common core are also included.