Answer: God doesn't think he's Bill Gates.
Gates' latest area of playing God involves the simple matter of stopping hurricanes:
The idea is actually pretty simple. Large tubes from the surface of the ocean to some depth are attached to floating platforms. Waves slosh over the edge of the platform and the warm surface water from the waves run down the tube to the depths, requiring no external energy source. Build a gazillion of them, stick them in the possible path of a serious hurricane, and presto!, the hurricane is downgraded a couple of notches relative to what it would've been since it no longer has access to that very warm surface water that would fuel it.
Microsoft's chairman is among the inventors listed on a new batch of patent applications that propose using large fleets of vessels to suppress hurricanes through various methods of mixing warm water from the surface of the ocean with colder water at greater depths. The idea is to decrease the surface temperature, reducing or eliminating the heat-driven condensation that fuels the giant storms.
The filings were made by Searete LLC, an entity tied to Intellectual Ventures, the Bellevue-based patent and invention house run by Nathan Myhrvold, the former Microsoft chief technology officer. Myhrvold and several others are listed along with Gates as inventors.
Since these could be completely passive devices, it wouldn't cost all that much to build them. The only question is could you actually build and deploy enough of them to make a significant difference.
Oh! And in the long term, there'd be even more heat and energy in the ocean which would mean even more intense and destructive hurricanes. But hey, that's for another generation to worry about.