The first nine months of our life we spend immersed in water, protected and nurtured by and even breathing it in our mothers womb.
The human body consists of about 65% water. Blood is 92% water, the brain and muscles are 75% water, and bones are about 22% water.
A human can survive for a month or more without eating food, but only a few days without drinking water.
People feel thirsty when they have already lost around 2-3% of their body's water. Mental performance and physical coordination start to become impaired before thirst kicks in, typically around 1% dehydration.
About 70.8% of the Earth's surface is covered by water.
About 97.5% of the water is saline, while the remaining 2.5% is fresh water.
Most fresh water, about 68.7%, is locked in ice.
Only about 1.2% of all freshwater (which was only 2.5% of all water) is surface water, which serves most of life's needs.
In essence, only 0.007 percent of the planet's water is available to fuel and feed its 7.3 billion people.