Welcome Mr. Hydrogen (Raindrop)
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Raindrop is an educational cartoon series for kids about water, our planet and the environment.
Raindrop is a drop of water. You can find it in the forest, in the river, in the sea and even in your house. Surrounded by his friends, Nimbus, a cloud, and Frosty, an ice cube, he will live many adventures defeating Flu, the evil bactery, in his intent to destroy the environment. These cartoon adventures teach children to respect nature, the environment, and especially to assess the importance to life on the planet is the care and use of water.

This episode pays tribute to Henry Cavendish who discovered the synthesis of water. It is about his experiments at forming water from hydrogen and oxygen.