Catherine Heymans shares the challenges of researching invisible dark matter and details the benefits of always keeping in mind what you can’t see. This talk was filmed at TEDxGlasgow.. All TEDx events are organized independently by volunteers in the spirit of TED's mission of ideas worth spreading. To learn more about TEDxSHORTS, the TEDx program, or give feedback on this episode, please visit http://go.ted.com/tedxshorts.

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