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318 contributions
617 ideas
617 final ideas
99 final ideas
Starts in 13 days
Announced Sep 18, 2017
Starts Sep 30, 2017

Refinement

During Refinement, participants will have the opportunity to iterate upon their Ideas by gathering feedback, developing prototypes, and testing their business models. 

At the same time, shortlisted Ideas will be working closely with a global network of Advisors, and community prototypers to further develop their concept. Ideas will be prompted to demonstrate notable improvement and answer a set of Refinement questions in order to be considered for one of our three distinct prize categories

Read the Challenge Brief for more information on this important topic.

12 days left to contribute to the Refinement phase

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A global substitution of plastic straws with 'nsheke' straws used by local communities in Kagera region, Tanzania for taking local beer.

A global substitution of plastic straws with 'nsheke' straws used by local communities in Kagera region, Tanzania for taking local beer.

Photo of Sadam Matsawili
19 10

I invented a tethered bottle cap that remains connected to its container and ensures recycling.

I invented a tethered bottle cap that remains connected to its container and ensures recycling.

Photo of Michael Maguire

Promote a cultural change of consumption with a system of bulk purchases of hygiene and cleaning products in developing countries.

Promote a cultural change of consumption with a system of bulk purchases of hygiene and cleaning products in developing countries.

Photo of Guilherme Broliato