This portable fire extinguisher is lightweight, inexpensive, non-toxic, recyclable, uses water more efficiently and is less damaging to structures and electronics than a typical sprinkler system.
In 2001 NASA sent its Opportunity rover to Mars in search of evidence for water in the planet's past. The mission was successful, finding rocks containing salt that formed in a watery environment
Take raw sewage flowing from a major apartment complex. Send it through a 2 millimeter screen. Let a flora of microorganisms feast on it for a while. Filter it – this time through pores just 50
