Ed Huntress wrote:

I won't get worried again until Republicans tell us we should
worry. If they start to show signs of nervousness about it, then
it will be time to buy a woodstove and a good bicycle, because it
will mean it's already too late to do anything about it.

Invest early in methane hydrate mining. Discover magazine has a rather
interesting article on the subject. The oceanic reserves of the stuff
dwarf oil reserves. And it's interesting stuff.
Nothing quite like a picture of a chunk of ice burning...

Jon