How did they build the Twin Towers? What were the challenges?
The problem wasn’t building to the sky, it was digging into the earth. Before any steel went up, men had to build a fortress down–The site was landfill, soft…
We are full of curiosity about the world, so we have countless questions every day. If you have the same question, you can come here and see how many people in the world share your curiosity. To understand the world is to understand ourselves.