Science and Technology

Why do factories have tall chimneys?

Science and Technology

Why do dark objects look smaller than bright objects?

How things work

How does soap remove the dirt out of things?

Science and Technology

Why does blotting paper absorb ink?

Living Creatures

Do parrots know what they are talking about?

Living Creatures

Why deer have antlers? What are they made of?

How things work

How does glue work? How does it bond two things?

Planet Earth

Which is the least nutritious fruit?

Living Creatures

Why and how do spiders spin threads?

Human Biology

What is tetanus? What causes it?

Planet Earth

Which is the most nutritious fruit among those commonly eaten raw?

Human Biology

Why does sore throat look red?

World

How many workers were employed for construction of the Great Pyramid of Khufu?

Science and Technology

Why is foam of soap always white even if the soap is of different color?

Living Creatures

How does cockroach easily avoid a swipe? Which organ forewarns it about the attack?