The matter of energy sources is completely off-topic, and deserves a thread of its own.
Suffice, though, to quote a common saying in Western Colorado (the site of major deposits of oil shale) "Oil shale is the fuel of the future - and always will be."
As for controlled nuclear fusion, this had already been achieved before I started high school (which wasn't exactly yesterday!). The problem was then - and still is now - that the process used more energy than it released. (Uncontrolled nuclear fusion, in the form of the Hydrogen Bomb, has of course been around since the early 1950s).
No more of this, though, unless somebody wants to kick off a separate thread on the topic of energy sources!
Bill.