3 ms·
The sand comment had me perplexed, until I did some googling: https://www.npr.org/2017/07/21/538472671/world-faces-global-sand-shortage https://www.npr.org/201
by tshannon 7y ago
The sand comment had me perplexed, until I did some googling:
https://www.npr.org/2017/07/21/538472671/world-faces-global-sand-shortage https://www.npr.org/2017/07/21/538472671/world-faces-global-...
- mcv 7y agoA lot of Dutch companies get their sand from the bottom of the sea, though. Plenty of sand there.
- DonHopkins 7y agoApparently desert sand is no good for making concrete, because it's been smoothed and rounded by the wind. I'm guessing moon sand wouldn't have such a problem. Although you'd have to solve the problem of re-entry into the Earth's atmosphere. How practical are space elevators?