Recovering usable petroleum from oil sands is about seven times more difficult than getting it from other sources, but rising energy costs have caused a flurry of new investment into this energy ...

Resonant booming shook the sands around them. Paul lurched sideways two steps. 'Boom! Boom!' 'Drum sand!' Jessica hissed... 'Run!'" -Dune, p.265 Arrakis' apex predators, the subterranean sandworms ...