It's one of the greatest shows on earth: the Olympic Games 2012. 10,500 athletes from around the world descend on London for the next 19 days of competitions, tears and triumphs as they go for gold. Let the games begin.
But as well as the athletes, London also play host to the hundreds of thousands of spectators, Olympic organisers, media, businesses, politicians, caterers - the list goes on. London will be a hive of action, pumping and buzzing with energy and adrenaline.
Plastic bags can take between 400-1,000 years to break down, and like all forms of plastic they do not biodegrade. Instead they photo degrade, breaking down into smaller and smaller toxic bits that contaminate soil, waterways and oceans, entering the food chain when ingested by animals.