รายละเอียด(อย่างย่อ) You'll also learn about sustainable energies by creating a simple solar oven, cutting down on cling-film by making a food wrap from scrap cotton and beeswax, and turning an old t-shirt into a reusable tote bag so you never need to buy a plastic carrier bag again. You can even grow new plants to clean the air in your own upcycled milk bottle planters and using homemade compost.