What will we do as a civilization when we double our population?

[Beer4Me]

War.

 

[soulcougher73]

War.

But do you know what it's good for?

 

[GasX]

Ahhhhhhbsolutely nothing

 

[ronbo613]

Don't worry about it because the weight of humanity will turn the earth into an uninhabitable desert and the population will stop growing.

 

[Ichinisan]

Each other.

We'll do each other.

 

[stormkroe]

How about using a microfraction of our planet colonization money to drop a nuclear power plant at the south pole, use it to subsidize power while we build a huge wind generation system, then step 3: contained residences/commercial/industrial and profit. Think of all the fresh water there.
Even if we look at the eventual melting, the things we would learn from it would go a long a way towards improving our planet colonizing skillset.
/book idea