Hello, Earth-defender! GaiaGuardia is giving the big, beautiful globe a gentle hug. She knows that our amazing planet is our only home, and it’s our job to protect it with all our hearts. A) The Story of Our Planet Earth and How to Be Its Best Friend. B) The Earth gives us clean air, water, and food. To say thank you, should we plant a tree or drop some litter? C) Let's think of one kind thing we can do for the Earth today.