Water is one of the building blocks behind the miracle of life on earth. It covers 71% of our planet and forms a key part of our daily lives. Where this important resource came from, however, is a mystery. Why does nobody know for sure where our water came from? --- Subscribe to Spark for more amazing science, tech & engineering videos: https://goo.gl/LIrlur 🚀 Join the Spark Channel Membership to get access to perks: null Find us on: Facebook: https://www.facebook.com/SparkDocs/ Instagram: https://www.instagram.com/spark_channel/ Any queries, please contact us at: owned-enquiries@littledotstudios.com #Spark