This is Bethany and I am in London with Brandon B and Matt for the 3D4D Challenge:
Our proposal centers around Oaxaca, Mexico where we plan to bring our large printer, filament extruder, shredder, and some desktop printers. We plan to start out by printing composting latrines and rainwater collection system components to aid Water for Human's design to provide good sanitation and clean drinking water to the locals.
There will be live stream of the presentations Friday at 5pm BST at:
Edit from Mark:
I just did the math. The live stream is at 9am local time. I encourage you to watch and cheer our group on from across the world!