From beds made out of recycled cardboard to podiums made of donated plastic, the Tokyo 2020 Olympics are aiming to be the greenest games yet.
The organisers of the Olympics are aiming to create a "minimal impact Games", through a series of steps outlined in the Tokyo 2020 Olympic and Paralympic Games Sustainability Plan.
The majority of venues that will host events already existed with several reused from the Tokyo 1964 Olympics and podiums and medals have been made from recycled materials.
The sustainability plan claims the games are aiming to move "towards zero carbon" by "focusing on maximum energy savings and use of renewable energy".
However, a recent peer-reviewed report has called into question the event's green credentials and ranked it among the least sustainable Olympics of recent times. Co-author David Gogishvili told Dezeen that the efforts were "greenwashing". Read on for 10 design projects aiming to make the games sustainable.

Torch by Tokujin Yoshioka
The Olympic torches, designed by Tokujin Yoshioka, were made up of recycled construction waste from temporary housing used in the aftermath of the Great East Japan earthquake and tsunami in 2011.
The designer used an extrusion technique to produce the 71-centimetre rose-gold torches, which resemble the national flower of Japan, the sakura flower. Both the relay torches and cauldron holding the Olympic flame are fueled by hydrogen instead of fossil gas.
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