The first is a way to see heart rates visually in real time using a laser and assorted junk. To learn more follow this link to the DIY Ballistocardiogram Bed. This was done with friends Brian and Sima.
Photo of the key setup
This is what the heart rate looks like on the wall
This is what the signal looks like (using open CV)
The third is just one new story in a lifetime of playing in the snow. There is a video and a bunch of GIFs and you can read about how it came to be over here http://jonathan.lansey.net/pastimes/snow_heads/index.html
As always, feel free to share what you like and feel free to comment and question if you have any!