There is no other mode of transportation cheaper than shipping across the ocean.
launching things via a mass driver from the moon to the earth requires a lot less fuel, is faster, and cheaper than shipping across the ocean
That one is subsidized by externalizing costs to our lungs.
Shipping on water has been, by far, the cheapest mode of long-distance shipping since the moment boats were invented. That is to say, since thousands of years before boats were ever powered by the shit that destroys our lungs.
So is pace travel. Then rockets are not green!
launching things via a mass driver from the moon to the earth requires a lot less fuel, is faster, and cheaper than shipping across the ocean
That one is subsidized by externalizing costs to our lungs.
Shipping on water has been, by far, the cheapest mode of long-distance shipping since the moment boats were invented. That is to say, since thousands of years before boats were ever powered by the shit that destroys our lungs.
So is pace travel. Then rockets are not green!