Euthanasia refers to the painless killing of a patient suffering from an incurable disease. It can be active, involving a medical professional ending a patient's life, or passive, involving removing life support to allow natural death. The document outlines the history of euthanasia from ancient times to its current legal status. It describes types of euthanasia including voluntary, involuntary, physician-assisted suicide, and the difference between active and passive euthanasia. Arguments for and against euthanasia are presented. While euthanasia remains illegal in many countries, passive euthanasia is legal in India but active euthanasia is still prohibited.