Let's talk Water.​  Because it's important.  (vital)

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Sure.  Water.  H20.  A covalent bond of two hydrogen atoms and one oxygen atom per molecule.  A colorless, transparent chemical substance that constitutes Earth's streams, lakes, oceans, and the fluids of every living terrestrial organism.  It can exist as a solid (ice), a liquid, or a gas (steam or water vapor); abides in nature as snow, glaciers, icebergs, clouds, fog, dew, aquifers, and humidity in the atmosphere, and it comprises 71% of our planet's surface.

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Only 2.5% of the water found on Earth is freshwater; that is, water we can drink-and 98.8% of that freshwater exists as ice and groundwater.  Less than .3% of all freshwater is in rivers, lakes, and the atmosphere.

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Safe drinking water is essential to humans, though it contains no calories or organic nutrients.  Access to safe drinking water has improved recently in nearly every part of the world, but still today, almost one billion people lack access to safe water and over 2.5 billion lack access to adequate sanitation[1].

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It has been estimated that by 2025 more than half of the world's population will undergo a 'water-based vulnerability'[2].  A report issued in November 2009 suggests that by 2030, in some developing regions of the world, water demand will exceed supply by 50%.

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Ever since the beginning of civilization, humans have flourished around rivers and major waterways.  Mesopotamia was situated between the Tigris and Euphrates rivers.  The ancient Egyptians relied on the Nile.  Rome was founded on the banks of the Tiber.

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Water fit for human consumption is referred to as 'potable water'.  Water that is not potable may be made potable by filtration, distillation, or a myriad of other methods.

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The human body is comprised of anywhere from 78% to 55% water.  To function properly, the body needs somewhere between one and seven liters of water per day to prevent dehydration.

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Water is necessary for life.  Without it, we die.  I could go on all day about the political aspects.  Municipal water is treated with chemicals such as chlorine and fluoride (hint:  it's not good for you).  Conglomerates like Nestle are attempting to make water into a commodity.  And, in states such as Oregon and Colorado, you can't even harvest rainwater (read:  water from the sky) without being found guilty of a crime.

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Why would something so essential to life ever be used against us?  Good question.

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It's a far better strategy to take matters into our own hands; that is, to become more self-sufficient and self-reliant.

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Lucky for us, there's plenty of stuff out there to help us along the way.