Science: Water covered whole earth

From studying samples of the earth's oldest rocks, researchers have confirmed both theoretically and observationally water did indeed cover the whole earth in it's early stages.

W.R Kuhn, J.C.G. Walker, and H.G. Marshall, "The Effect of Earth's Surface Temperature from Variations in Rotation Rate, Conitent Formation, Solar Luminosity, and Carbon Dioxide," Journal of Geophysical Research 94 (1989), pages 11,129-131,136.

Hubert P. Yockey, Information Theory and Molecular Biology (Cambridge, UK: Cambridge University Press, 1992), pages 222-223.

Richard A. Kerr, "Fiery Io Models Earth's First Days," Science 280 (1998), page 382.