Fact Directory

Explore the latest fascinating facts freshly added to our collection!

What is the Eiffel Tower made of?
Buildings
The Eiffel Tower is made from 7,300 tons of puddle iron, a refined type of iron that was considered ... Read more
Does Microwaved Water Kill Plants?
Science
No, There is limited validity on the accuracy of such claims that microwaving water "change the mole... Read more
What Are AI Hallucinations?
AI
AI hallucinations occur when artificial intelligence systems generate outputs that are inaccurate, m... Read more
How deep is the biggest hole?
Science
The Kola Superdeep Borehole, located in Russia, is the world's deepest man-made hole, reaching a dep... Read more
How large is the Amazon Rainforest?
Geography
The size of the Amazon rainforest varies depending on the definition used. It generally covers betwe... Read more
When were QR codes invented?
Technology
QR codes were invented in 1994 by DENSO WAVE, a division of DENSO Corporation in Japan. The inventio... Read more
How long does an AA battery last?
Technology
Quality alkaline batteries have a storage life of around 10 years. More advanced chemistries such as... Read more
How long does it take a kettle to boil?
Food
The time it takes to boil water depends on the amount of water and the power of your heating device:... Read more
Is A4 paper the same as Letter?
Technology
No, A4 and US Letter are similar in appearance but not the same size: A4 is 210 mm x 297 mm, making... Read more
Do Evaporative Coolers Work in Humid Tropical Environments?
Technology
Evaporative coolers are not well-suited for humid tropical environments because their effectiveness ... Read more