World

What is the story behind the formation of WWF?

World

What is Swiss Army Knife? Who Invented It?

World

What is Magna Carta? What is its importance in history?

How things work

Who painted the picture Guernica? Which tragedy inspired it?

How things work

Who is known as the father of typewriter?

World

What was the Boston Tea Party?

How things work

Who was the inventor of the fax machine? Who established the first commercial fax service?

How things work

What is an Ophthalmoscope? Who invented it?

Human Biology

How long can a person go without sleep?

Human Biology

Why is it necessary to sleep every night?

Human Biology

Is it true that pupils dilate when we see something we like?

How things work

How does polygraph test work? Is it accurate in detecting lies?

Science and Technology

What is the formula to calculate IQ? Is IQ of 100 good?

How things work

In what atmospheric conditions is dew formed?

How things work

How do induction cooktops work? Are they cheaper than gas?