Sustainability section 1. Consider the past 60 years in the timeline of the development of sustainability in the world. Choose one particular ‘adverse event' that has occurred where significant environmental damage resulted (or had been occurring. Think about any positive outcome that may have occurred as a result of addressing the environmental issue you have chosen. Describe the initial cause of the ‘adverse event', what actually happened, what the aftermath was, and your chosen positive outcome that came from it.(oil spills disaster 1967)