While keeping corals in the hobby could preserve some and prevent them from going extinct, to me, unless corals start to tolerate higher temperatures, losing reefs in the world is inevitable. We're unable to control the sources that cause global warming, if we were able to, we would have done so already. Not to sound pessimistic, but we worry about one day when the Sun will supernova and how it will impact humans, but I think the end of the human race will be our own doing. Like the dinosaur ages, the ice age, and so forth, humans are just another page in Earth's history. When a 1000 yrs seems long to us, or even 2006 years seems long to us, it's merely a grain of sand in Earth's hourglass.