Human Biology

Why do eyes burn when cutting onions? How to prevent it?

How things work

Is László Bíró the inventor of ballpoint pen? And what gave him the idea of making such a pen?

How things work

Is it true that drinking a glass of warm milk before going to bed induces sleep?

How things work

Who Made Compact Disk First, Phillips or Sony?

Science and Technology

How does compact disc (CD) work?

Plastics

What is thermocol? And what is its manufacturing process?

How things work

What technique is used in microwave ovens to cook food in minutes?

Human Biology

Why do we have two – deciduous and permanent – sets of teeth?

Human Biology

What causes hiccups and how they can be cured?

Science and Technology

Why are X-rays named after a letter of alphabet? What makes the X-rays pass through solid objects?

Outer Space

How does the Sun convert its mass into energy according to Einstein’s famous equation E=mc²?

Living Creatures

Why does tail of a house-lizard (gecko) jerk and toss about for some time even after cutting off from the body?

Living Creatures

Why the flock of migrating birds mostly flies in ‘V’ formation only?

World

What does the ‘Rx’ sign on doctors’ prescription mean?

World

Who Is The Inventor Of ‘Smiley’ Face Symbol And What Is The Story Of Its Creation?