How much do we really understand of how our planet came to be as we know it? Five scientists tell a tantalising tale 2: Drifting Continents
• ... The earth heated up In side. leaving the crust floating on the molten core with a more-or-less plastic mantle in between. I use the word " floating " deliberately, because there's no reason why any particular continent should remain anchored in one spot forever ' - DR D. P. MCKENZIE. Dept of Geodesy and Geophysics, Cambridge University
(So Near to Hell, by Dr Robert Jastrow : 9 March)