Survival Zombie Apocalypse: ~ This Disc Made of Clay and Sawdust Can Make Any Water Disease-Free. The PureMadi water filter might not look like much, but it can remove almost any deadly pathogen from drinking water. Plus, it’s cheap.
Mosquito trap - Cut top off 2 liter bottle. Invert cone inside straight part of bottle and glue together. Add 1 tsp yeast and cup sugar to luke warm water, and pour in bottle. Mosquitoes are attracted to the carbon dioxide produced
Self-Healing Concrete Uses Bacteria, Activated by Water, to Fill Cracks, Dutch researchers from TU Delft, have infused concrete with the bacillus bacteria to create a bio-concrete that has the ability to self-repair