Science: general issues

This volume brings together essays from several different perspectives on a topic in epistemology that is garnering increased attention: Inquiry.

Read about scientists' recent discoveries about Uranus and what they hope to find out about the planet in the future.

An innovative look at animal eyes from the creators of Bone by Bone, Tooth by Tooth, and Fossil by Fossil.

Explore the fascinating universe we live in.

Albert Einstein rewrote the rules of physics and changed how scientists see space and time forever.

Absorbing facts about the 11.

Do your eyes send out light like headlights?

Doctors and scientists work hard to find ways to keep people healthy.

What do flagpoles and some window blinds have in common?

Have you ever used your imagination to solve a problem?

How does an egg become a butterfly?

If you were dormant / waiting out the cold, the dry, the heat / you would pause.

Why does the moon come out at night?

Sunlight, air, water, and minerals help keep plants alive.

A baseball player slides on the ground to tag a base.

What happens to the bodies of animals and humans after death?

Vivid photos and up-to-date information teach readers about Mars, including details on climate and geography, how scientists have explored the planet, and what they hope to find out about Mars in the future.

A plant can form fruit and seeds when it is pollinated.

People use machinery in their lives every day.

See what pulls and pushes can do through several examples of forces and motion in everyday life.

Do you see clearly?

It takes seven years to digest swallowed gum.

What sorts of animals live in the forest?

What do staircases, dump truck beds, and ramps have in common?

The circulatory system is made up of the heart, the blood, and strong tubes called blood vessels.

Will we one day be able to regrow limbs?

Did you know that light has energy?

Explore outer space through interactive augmented reality experiences!

How does a tadpole become a frog?

The nervous system is made up of the brain, the nerves, and the spinal cord.

Learners will understand how saws have sharp teeth that cut through wood.

COVID-19 has taken the entire world by storm.

The skeletal system is made up of about two hundred and six bones.

Compare different types of scales and discover how they protect the bodies of fish and reptiles.

The earth is round, so why don't some people hang upside down?

Outbreaks of Ebola can be scary and deadly.

The flower is the part of a plant that makes seeds or fruit.

Step away from the screen and learn science in the real world.

How have scientists explored Neptune?

The muscular system is made up of three different kinds of muscles: skeletal muscles, smooth muscle, and heart muscle.

Carefully leveled text and eye-catching photos invite young readers to explore the sense of sight.

A light beach ball floats on the water.

¿Qué son los imanes?

Explore outer space through interactive augmented reality experiences!

What color are your eyes?

¡La Tierra es bastante increíble!

Medicine is always improving.

Check out these cool critters and learn how their wacky adornments help them survive!

Stephen Hawking was one of the world's most celebrated and inspiring physicists, known for his theories on relativity, black holes, and quantum mechanics.