This course is intended for students with no science background. It helps students learn about life from chemical aspects and develop a sense of enquiry thinking in science. The course will lay the knowledge foundation by a brief introduction of chemistry of life from molecular level to human body and then ecological level, followed by selected topics on the subject with scientific focus, such as tests with DNA, cell signaling and metabolism; with health focus, such as nutrition, genetic engineering and diseases; and finally with the ecological focus such as the pollution and clean energy.