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Please find below the judging results for your proposal.

Semi-Finalist Evaluation

Judges'' comments

SUBJECT: Climate CoLab Judging Results

Proposal: Saving water with Ping-Pong balls.
Contest: Energy-Water Nexus

Thank you for participating in the 2015 Climate CoLab Energy-Water Nexus contest, and for the time you spent in creating and revising your entry.

The Judges have strongly considered your proposal in this second round of evaluation, and have chosen to not advance it as a Finalist for this contest.

We, the Judges and contest Fellows, are truly grateful for your contribution to the Climate CoLab and for your commitment to address climate change. Specific comments can be found below.

We encourage you to keep developing your work. Transfer it to the Proposal Workspace to re-open it, make edits, add collaborators, and even submit it to a future contest. You can do so by logging into your account, opening your proposal, selecting the Admin tab, and clicking “Move proposal”.

We hope you will stay involved in the Climate CoLab community. Please support and comment on proposals that have been named Finalists and vote for which proposal you would like to see nominated as the contest’s Popular Choice Winner.

If you have questions, please contact the Climate CoLab staff at

Keep up the great work. And thank you again for being a part of this mission to harness the world’s collective efforts to develop and share innovative climate change solutions.

2015 Climate CoLab Judges

Nice idea, but others have already developed the idea (see and This proposal needs be flushed out significantly; there are several missing discussions that should be included in a proposal of this nature. Political/policy challenges are not discussed; neither are the potential environmental impacts of placing silver ping pong balls in a pond or reservoir. The concept and reasoning is intelligible, but the implementation and any sense of the costs or benefits of experiments of this nature are ignored. It is recommended that some quantitative analysis of the scale of the evaporation problem is developed. What I need to see if a quantitative analysis of the scale of the evaporation problem. the potential capacity of the ping-pong system to mitigate it, the costs, the environmental impacts (e.g. on aquatic life), etc. Evaporation is a very localized problem and it is relevant in large reservoirs in dry areas, but many of these reservoirs are also used for other purposes (recreation, fishing, etc).

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