Science has come a long way, yet we still do not understand everything about our universe- or ourselves. The book takes the reader on an incredible rollercoaster exploring the top unsolved mysteries in science that have kept the world constantly curious. Though scientists may have theories about the natural phenomena, no one can say for certain about: Which drives the evolution? What is the real nature of time? Where did mathematics come from? Are we alone in the universe? How did the human language evolve? And other famous unsolved mysteries. These are the most important, interesting, and awe-inspiring unanswered questions in science that the book does narrate. These are the top scientific mysteries for the 21st century scientists to solve. There are also picks in the book about the most profound open questions on Dark Energy, Dark Matter, Black Hole, Consciousness, Life definition etc. Some of these mysteries are fundamental and commonplace that it is surprising that we do not know more. Despite new discoveries every day, the human species still live in a world of various elements in secrecy. For centuries, scientists have been struggling to answer seemingly simple questions like this.