World

What is the difference between United Nations and League of Nations?

Science and Technology

What is the history behind the invention of hypodermic syringe?

World

What was Velvet Revolution? Where did it take place?

World

Which literary work is considered to be the first novel in the world?

Human Biology

What is viral fever?

World

Which award is known as the Nobel Prize of Asia?

World

Who invented the Polaroid Camera and Glare-free Car light?

How things work

What are stem cells? What are their uses?

World

What is the story behind the origin of Coca-Cola?

World

Where did the Cultural Revolution take place?

Living Creatures

What is hibernation? And how is it different from aestivation?

World

When did the Earth Day start to be observed? Which incident inspired the creation of Earth Day?

Science and Technology

What is 3D printing?

Planet Earth

What are the principal layers of the atmosphere of Earth?

How things work

Who invented the dishwasher?