The use of public transport will mean fewer traffic hold ups and less pollution from exhausts. Spectators will use the same ticket for transport and entry, saving tonnes of paper. There will be no polystyrene packaging of food at Olympic venues. All plates and cups will be reusable, recyclable or able to be made into compost. The Sydney Aquatics Centre has cooling vents beneath each spectators seat which means only the air around each one is cooled saving huge amounts of energy.
Heat created by running the air conditioning is used to warm the water in the pool.
They are earthworms which are living off the food waste from the cafeterias and eat up to 75kg of food waste each day. Best viewed in 800X600 resolution.