In general, it seems like moving sand wouldn't be cost effective.
Seems the world is running out of local sand, and not just sand in general. I imagine there is plenty of sand in inaccessible places (Greenland being one of them) that would just cost too much to move to the location where it is needed.
The oil analogy is good. At some point you spend more energy getting it out of the ground than burning it.
Seems the world is running out of local sand, and not just sand in general. I imagine there is plenty of sand in inaccessible places (Greenland being one of them) that would just cost too much to move to the location where it is needed.
The oil analogy is good. At some point you spend more energy getting it out of the ground than burning it.