Terrawatch: could granite solve the hard problem of nuclear waste storage?

Researchers have found the rock has a self-sealing mechanism that keeps fluids locked away

We need to find somewhere safe to dispose of high-level nuclear waste; a place where we can be confident it will be isolated and contained for hundreds of thousands of years. And if we want to keep a lid on global warming then we may well need to find a similar place to store carbon dioxide too. But where?