deletions | additions       diff --git a/figures/nature_screen_shot/caption.md b/figures/nature_screen_shot/caption.md  index da08dd0..9923671 100644  --- a/figures/nature_screen_shot/caption.md  +++ b/figures/nature_screen_shot/caption.md 
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Screen shot of the first [first  3D PDF published in _Nature_ _Nature_](http://www.nature.com/nature/journal/v457/n7225/pdf/nature07609_3D_web.pdf)  in 2009 \cite{2009Natur.457...63G}. A video demonstration of how users can interact with the figure is [on YouTube, here](https://www.youtube.com/watch?v=AEuCA22Eq1s).