Needless to say, today we know that the hypersalinisation of the Med would take place in historical time-scales, and that the impact on global climate would be more than significant, to cite only two obvious issues with this idea.
Pre-WWII videos on the Atlantropa Project, including the imaginary collapse of a
projected dam across the Strait of Gibraltar (see caption in Youtube for credits).
And some recent (scientific?) sequels of Atlantropa:
- R.B. Cathcart, "What if We Lowered the Mediterranean Sea?", Speculations in Science and Technology, 8: 7-15 (1985).
- R.B. Cathcart, "Mitigative Anthropogeomorphology: a revived 'plan' for the Mediterranean Sea Basin and the Sahara", Terra Nova: The European Journal of Geosciences, 7: 636-640 (1995).
- Update: Gower (2015), "A sea surface height control dam at the Strait of Gibraltar"