What is the math behind the Leaning Tower of Pisa?
The math is simple. It is a fight between two forces: the tower’s weight and the ground it stands on. The tower has a center of gravity. This is…
Where was the Luftwaffe during the Operation Overlord of the allied forces in the beaches of Normandy in WW2?
As it happens the Germans put together a formidable air flotilla of almost 500 planes to bomb the Allied invasion fleet but the planes were seized by Hitler…
What are the most mysterious countries?
There’s a country at the edge of Europe that feels like time stopped in the 80s. Literally. People from Transnistria, a breakaway region of Moldova that declared independence in…
How did the Roman aqueducts not have dirty, bug-infested water in them?
None of the other answers I’ve read actually explains how Roman aqueducts delivered relatively clear water. Yes, it was not necessarily germ free, but the addition of wine,…
During a tsunami, do whales and sharks go crashing into whatever town the wave hits?
No, don’t worry about some great white swimming down the road during a tsunami. Great whites are not likely to find themselves in cities. Tsunamis do strange things,…
Are there any snakes in Africa that are more dangerous than black mambas and cobras to humans?
In terms of aggression, the Black Mamba with its cousin, the Green Mamba are the top contenders for the most dangerous snakes. Black and Green Mambas They both…
If CO2 is heavy, why doesn’t it settle in valleys and low spots to be toxic to breath?
The molecular weight of air is about 30 and CO2 is about 44 so there’s not a large difference. The air stays mixed due to convection and gaseous…
What is the largest capacitor ever made and what was its purpose?
The Dresden High Magnetic Field Laboratory houses the world’s largest capacitor bank. A beast that stores fifty megajoules. They built it for one reason: to create magnetic fields that…
Why do dogs suddenly bark at nothing?
I used to think my dog was barking at nothing. Then I saw a pattern: every time she did that, about 2 minutes later, I’d hear thunder in…
Will Trump repeal the 19th Amendment?
Sorry, can’t happen! Our forefathers had everything in mind, when they wrote the US Constitution. Thanks to James Madison, Alexander Hamilton and others. To add or repeal an…