"If one looks at a map of the Atlantic Ocean, it doesn't take much imagination to see that, allowing for some variation in outline over the eons, you could fit the west coast of Europe and Africa together with the east coast of North and South America, like pieces in a jigsaw puzzle. These four continents used to be in contact with each other. Essentially, one continent. And over time, due to the action of plate tectonics driven by the monumental forces at work in the earth's interior, they have drifted apart."

Don,

I remember that as a child, in the 1950s, I pointed out to one of my teachers that the two sides of the Atlantic looked like they fitted together ... and was told that I was being stupid!