Engineering360: "Watch how a solar sponge soaks up water impurities"

Wawo! My goodness! What a break through! There parents should be happy that they raised such clever kids. It's a pity their parents never told them about water purification tablets that do not rely on solar, when its pouring with rain, do not rely on elevated temperatures when it only 5C outside and don't have 24 hrs to wait for a cup of tea.

25 Liters of water, weather not dependent, two tablets or a table spoon of bleach. Apply tablets, or bleach, stir well, leave to stand for 20 minutes. The 20 minutes is essential as this time is needed to make a fire to boil the water to make a cup of tea.

However, I think in this case, they will die of thirst, hypothermia, and confusion as I doubt they will have some tech device to make fire for them, to boil the water. Perhaps they can design an app for the cell phone to create a virtual fire.

Really, we spend thousands of $$$ on complicating the simple and think we have a breakthrough? Lovey little fish tank though, great for catching tiddlers for a fish sandwich. Is it supplied with a net or is that extra?