In many parts of the world, resources are used up much quicker than the Earth can cope with. Major changes are needed to our lifestyles and consumption, at an individual, national and global level, if the world is to be able to achieve the Global Goals by 2030.
Go out and conduct a litter survey with your students. You will need: Sticks and two-metre lengths of string. Ideally gloves and/or picking tools. Agree on any litter the students will not pick up, e.g. because it is hazardous.