How things work

Who Is The Inventor Of Band-Aid That Is Used To Cover Wounds?

World

What are the true primary colors, if not red, yellow and blue?

How things work

How long is the life of passenger planes like Boeing-747 (Jumbo Jet) and Airbus?

Planet Earth

Why does the ocean appear blue? Is it because of the sky’s reflection?

Planet Earth

Why is the center of the Earth still hot?

Human Biology

Why do eyes close when sneezing?

Human Biology

What are the causes and treatments of pimples or acne?

Science and Technology

Why are drops of liquid always spherical in shape?

Living Creatures

Is it true that only female mosquito bites? What does male mosquito feed on?

Living Creatures

Why do dogs run behind cars and bikes?

How things work

Why do air travelers experience jet lag after a long-haul flight? And how to prevent or remedy it?

Outer Space

Is our Milky Way a static object or rotates like planets and stars?

Science and Technology

Who designed Analytical Engine, the first programmable computer?

Science and Technology

Why is diamond so hard even though it is basically graphite?

World

Which is the most valuable object relative to its weight and size?