At this day and age there is clear evidence that our planet Earth is going through a complete change: climate change, scarcity of natural resources, scarcity of energy, changes in people’s behaviours and ways of living, changes in our society and so on. s. We will work on the concept of waste and how “less” means “more”, that is, less consumption means more life. We are going to deal with the topic based on STEAM education design principles, we will analyse different types of waste: water waste, food waste, cloth waste, time waste and energy waste.