http://shawjonathan.wordpress.com/2011/08/10/by-swapna-dutta/

This is a tiny picture book that plays around with science and fantasy. That is to say, it's a fanciful account of the origin of clouds – some fairies who live in the sun build castles in the sky so it won't be so bare and empty – that ends up being a decorative but accurate account of how the water cycle works: the cloud castles are made from water, air and dust, and when they get too heavy they fall to the earth as water. The fairies have discovered 'a never-ending game'. The illustrations, by Geeta Vadhera, are fabulous. I see from the Internet that Ms Vadhera has gone on to international renown. This may be her only children's book.