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http://en.wikipedia.org/wiki/Expanding_earth_theory

The Expanding earth theory is an attempt to explain the position and movement of continents on the surface of the Earth. It has a relatively small following today, compared with the almost universally accepted theory of plate tectonics, and is considered to be discredited by mainstream geologists.

An expanding earth model was developed in the 1960s, building upon emerging evidence for sea floor expansion and continental drift. The expanded earth theory (and plate tectonics) incorporates the appearance of new crustal material at mid-ocean ridges, but the process of subduction is largely absent in this model.

Very few geologists or geophysicists today support the expanded Earth.[1] Many of those that remain are proponents of the ideas of the late Australian geologist S. Warren Carey. While Carey's ideas were popular for a time in the 1950s and 1960s, most workers in earth science believe that evidence collected over the last several decades supports a fixed size Earth, due to subduction, over the expanded Earth

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What a bunch of horse shit, if the earth was expanding it would start to spin slower.

I cant wait until it gets really big.

What a bunch of horse shit, if the earth was expanding it would start to spin slower.

The earth's rotation *is* slowing down, actually, although it has nothing to do with some crackpot "expanding earth" theory...it actually has to do our interaction with the moon and the tides it causes. Apparently, because of this, 620 million years ago each day was only about 22 hours long.

As for the expanding earth theory, the problem is that there is no plausible mechanism for how or why the earth would be expanding. Not to mention the fact that an increase in the circumference of the earth would mean an increase in the volume of the earth, which would mean that somehow a huge amount of matter would have to be being constantly added to the earth to allow such a growth. Unless you can find a source for all that matter, the theory is impossible, at least in regards to our current understanding of physics. Can't get matter from 'nuthin, they say.

b.s. i'm taking a geology class right now.