[propman]

Great info and so many other great answers and fun reading. Okay so the Afar Depression would be the equivalent of 12 years of current sea rise increases. It would require many tens of Kms worth of canals but in return could create a lot of hydro power. It would have lots of negatives like another commenter mentioned but also a few others primarily earthquake issues and awful impact on local environment.

Overall, if it was a life and death situation not the worst solution in the world. We are probably good till 2050 and this could add another 12 years. We get 20% of our energy from nuclear and I hope both sides see the need for it and if we can get it to 60% and reach 300 nuclear reactors & cut down prices back to 2008 levels to $3B each and help China and India build theirs we should be in a great state.