Volcanic Activity May Split Africa In Two
An anonymous reader writes 'Volcanic activity may split the African continent in two, creating a new ocean, say experts. This is due to a recent geological crack which has appeared in northeastern Ethiopia.'
http://science.slashdot.org/article.pl?sid=09/11/03/0313242
What's not very well-known is that the same thing happened to North America, almost splitting the continent in two. Lake Superior lies in the depression left by the failed North American rift.