If the earth is100cm in diameter,
how high is the highest mountain, how deep is the deepest sea?
How much drinking water do we have to share?
A new perspective for our planet earth.
text=Tomoya Nagai, illustrations=Toriko Kino
cooperator=National Museum of Emerging Science and Innovation
Written in Japanese, Published from Sekaibunkasha, September 2002, 900yen+tax.