If Apple adjusts their policy towards habitual application spammers (have you seen the Games section?), it would also solve the problem. But its easier to just target soft porn.
You want contained hot aisles or contained cold aisles to maintain maximum efficiency. You want managed airflow.
Its perfectly ok for the hot aisle to be at 100+F. Its also perfectly ok for the cold aisle to be at the mid 70s, as long as there is no stratification or leakage (top of the rack should be within limits). What you want to see is offline CRAHs or VFDs installed in the CRAHs throttling back their airflow.
I work at a company which specializes in monitoring and helping customers improve their capacity and energy use. By placing air where it needs to go you can both cut costs and improve capacity. Sadly, very very few datacenters are run with the efficiency and managed airflow in mind (people even put perforated tiles in the hot aisle!). If you have containment, then you're 95% of the way there. Another more modern option is liquid cooled racks, or in-row cooling (APC Pods and the like).
Living on Earth may be expensive, but it includes an annual free trip around the Sun.