Ethylene is a colorless gas that plays a crucial role in the world of plants. It acts as a natural hormone, helping fruits to ripen and flowers to bloom. For example, when you place a ripe banana next to other fruits, the ethylene it emits speeds up their ripening process, making them sweet and ready to eat. In addition to its importance in nature, ethylene is also widely used in industry. It is a key ingredient in the production of various plastics, such as polyethylene, which is used in bags and containers. This makes ethylene an essential compound in both agriculture and manufacturing.