Sigmund Freud was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating pathologies explained as originating in conflicts in the psyche, through dialogue between a patient and a psychoanalyst. In simple terms, Sigmund Freud's theory suggests that human behavior is influenced by unconscious memories, thoughts, and urges. This theory also proposes that the psyche comprises three aspects: the id, ego, and superego. The id is entirely unconscious, while the ego operates in the conscious mind.

Coca-Cola, or Coke, is a carbonated soft drink manufactured by the Coca-Cola Company. Originally marketed as a temperance drink and intended as a patent medicine, it was invented in the late 19th century by John Stith Pemberton in Atlanta, Georgia. This article focuses on a psychological technique which coke used in generating millions of sales. The strategy called 'Name-letter effect. This was a multi-national marketing campaign of Coca-Cola where it de-branded the traditional Coke logo, replacing "Coca-Cola" from one side of a bottle with the phrase "Share a Coke with" followed by a person's name.

The science that explains the need to reduce carbon emissions on an individual, community and global basis is irrefutable. Since the industrial revolution, the world has begun to warm to the point where the bedrock eco-systems that maintain life on earth are being pushed out of balance. In the past 200 years, carbon dioxide produced by fossil fuels has risen from 280 ppm to 400 ppm.