Khail's still in Austin hosting some SxSW events, so we've got Bryan Bishop sitting in as co-host today! There's a bunch of good stories and things in the show this afternoon. Firstly, Robert Downey Jr.'s amazing presentation of a low-cost, 3D-printed bionic arm to a very special recipient got us all a little choked up over the weekend. Then, a photographer's drone tour inside the world's largest cave made us stare in awe, and a clever YouTuber's robot training montage video had us tickled by its creativity.

Tomorrow, we'll have Armen Atoyan sitting in for Khail, so don't miss it!

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Here are some links and notes for all the things on the show today:

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