Nilo & Kairo are two young friends who are discovering the world. They want to live in a place that is green, sustainable and clean, and where all the species live together in perfect harmony!

Sometimes they worry about their future. They don’t think we are taking very good care of our planet. Will there be giraffes, gorillas, pandas and turtles when they grow up? What about forests? Will they be able to swim in lakes and oceans? Will the air be clean?

It’s not too late to save the environment, but we have to hurry! We can start here, by learning about our planet and how to take good care of it, and by sharing our knowledge with each other.


Join Nilo & Kairo in their adventures,  as they learn about the environment with Professor Green.

Nilo & Kairo's e-Books are available for purchase on Apple Books and Amazon.

Download images for your school projects or commercial use

Have some fun!
Learn about the environment.
Do experiments with Prof. Green.

Watch a movie about birds.