Robert Zubrin is former Chairman of the National Space Society, President of the Mars Society, and author of The Case For Mars: The Plan to Settle the Red Planet and Why We Must.
The de-militarized zone between North and South Korea represents a small strip of land some 1,528 km2 in area and off limits to people since the end of the Korean War in 1953 (58). Farming communities once abundant there no longer till the soil. The result of abandonment has been striking, and in favor of ecological recovery (59). During the intervening years, remnant populations of wildlife have re-bounded into robust populations within that narrow region, including the Asiatic black bear, musk deer, and the red-crowned crane. An unexpected (and unwanted) example of “proof of concept”, vivax malaria has also retuned to the area next to the DMZ in South Korea, as the result of that country’s inability to carry out effective mosquito-control programs that would ordinarily include portions of the DMZ (60).
Late in the “Account” Halley again turns to the question of utility, an inquiry that leads him to the most remarkable and, for future hollow-earth novelists, the most fruitful of propositions—that the inner earth may be capable of supporting life and that its structure may be as complex as that shown in Figure 1. Such a fantastic suggestion can be entertained if we inquire further into the nature of the fluid or ether that separates the inner globe (or, now, globes) from the outer, an as-yet unknown, magnetically-charged medium that may well produce its own vivifying light:
Harappa was regarded as another 'capital' of the 'Indus Empire. Here hardly any excavation has been done in the 'lower city' to the east of the ' citadel'. In fact, even within the citadel, the sporadic diggings have not helped very much to produce a coherent picture. Of the enclosing wall, however, many details are available.