Drain the Sea

The ice caps have melted and the world is flooded! Our only hope is to drill a hole into the crust to drain the sea. Reach a depth of 5km to win. Some people are skeptical of the plan. Stop drilling and you might lose support and get canned. Forgot to put these in the how to: You get $25 per surplus person every 5 seconds. If you delete a improvement you get back 50% the cost.