Scientists tell us that 99.99% of ALL animal and plant species that have ever existed ARE NOW EXTINCT. What does 'extinct' mean and why does it happen? This book looks at the strange and very different kinds of animals that have walked the planet and which we will never see.
How rocks first formed, where we find them and how they change, the different kinds and how we use them.
All about water - how we use it, waste it, where it comes from and how much we have.
Wind and generator of energy and how it works for us
Learn about heat in all of its forms and origins, and how it affects us every day.
