World

Which country was the first to use paper money as medium of exchange?

World

Which is The Largest Diamond Ever Known? Who owns it now?

Science and Technology

Does Sound Travel At The Same Speed In Air And Water? Does It Go On Forever?

Living Creatures

Which is the fastest moving land snake in the world?

Living Creatures

How does a snake swallow something bigger than itself?

Planet Earth

Why does a river curve and twist instead of running straight?

Human Biology

What causes an intensely painful and persistent toothache? And what is the remedy?

Outer Space

Will the Earth become a black hole one day?

Human Biology

What does a virus look like? How does it function?

World

What is the origin of the frequently used expression OK (Okay)?

Planet Earth

Why is the sky dull when a storm is coming on?

Planet Earth

Why is it easier to swim in saltwater than in fresh?

Human Biology

Why do we have lines on the palms of our hands?

Planet Earth

Which Are The Tallest Plants And Trees In The World?

Living Creatures

Why does mosquito bite itch? How to prevent mosquitoes from biting?