Some scientists believe that it is advisable to allow students to have contact with the important issues being debated in the field of science at the outset. But in fact teachers seldom mention the main controversial issues in the contemporary academic field even though they will teach them some scientific controversies in the past. This is concerned with the science teachers who are unwilling to introduce the current debates to students, for fear that students can't readily grasp the significance of the current academic debates if they don't first master the "fundamental knowledge."However things are different.College students are able to think over these controversies and understand what they are about by capitalizing on the knowledge they have acquired. Then what can college students learn from the current controversies concerned with the unknown world?First, it can stimulate their interest and attract their attention to watch those wise and imaginative scientists debating about the future world.Second, they will come to know that many important questions concerning our knowledge on nature are still a mystery. This will lead to the recognition of ignorance which will, in turn, urge them to make greater efforts in the scientific research.