The O2 ticketing system makes me wonder on how it works. It’s designer Gil Cocker stated that O2 is a two way ticketing system, wherein a couple of week before the main event, privileged ticket buyers are given a bag in the post filled with ingredients to grow grass. In return, it will replace the O2 exerted during the event. This one sounds to be big advantage to our air and nature. However, do not think it can immediately replace the O2 that are exerted during the events, but it is a great idea though. Buy doing this concept; we helped saved the earth while enjoying the things that we loved the most.