Why is the Cybertruck banned from UK roads?
Because it has a number of features that mean it cannot pass the safety inspection to be allowed on U.K. roads. First the big one, it cannot pass…
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…
Where is the highest concentration of gold on Earth?
The mines with the highest concentration of gold in the world are rocks around submarine hydrothermal vents around Aogashima in the Izu Islands. The average concentration of gold…
Why did people jump from the twin towers if they had a chance of surviving?
My answer will not be popular and many will disagree but here goes. (Beware: long answer because I worked in NYC at the time and have spent a…
What is the largest covered area that can be built without using central columns?
The size is almost unlimited even with current technology. I’ll give you three large if not the largest covered structures. New Century Global Center (NCGC) in Chengdu, China,…
Could the human body survive 10 seconds on the moon without a space suit?
Yes. You would not even suffer any permanent damage, if you are rescued after these ten seconds. The problem with vacuum, like on the moon, is, that water…
If a plane ran out of fuel at 35,000 feet doing 550 mph, how far could a pilot coast the plane?
We have a real-word example of such a problem. In 1983, Air Canada Flight 143, known now as the Gimli Glider, ran out of fuel at 41,000 feet. During…
What is the most breathtaking predator in nature?
The Yaguarondi , native to South America. It is a purely diurnal animal , unlike almost all felines. It is slightly larger than a domestic cat, often called the “otter cat” due to its…
Has the Earth ever had more than one moon in history?
Around 4.5 billion years ago, when the Solar System was brand new, Earth shared its orbit with another planet. This planet, Theia, was about the size of Mars….
How deep underground can you build and why does building underground have a limit?
In short, pressure, exactly as happens at the bottom of the sea, is so large when you go kilometres deep that rock explodes without warning. Temperatures raise without…