What if every human died.

What if every human being on Earth died, thats 6+ billion people.

Now if you look at how much water a human is made of (55% ~ 78% depending on body size.) you can calculate how much water will return to the planet once every corpse decomposes.

The average weight per person is 60 ~ 70 kg if they are an adult.

So:
60kg * 0.55 = 33 kilograms / Litres of water minimum on average
70kg * 0.78 = 54.6 kilograms/ Litres of water minimum on average

Now multiply the average Litres of water by the ammount of people in the world: 6,697,254,041 (2008 estimate)

Min: 221009383353 Litres / 1000 = 22100938.333 Kilolitres
Max: 365670070638.6 Litres / 1000 = 36567007.063 Kilolitres

or in gallons: 264.172052 per 1 KL

Min: 58384502311616.65 Gallons
Max: 96599812915583.9 Gallons

So if everyone died, funny as it is. The world would be flooded with an estimated 36567007.063 Kilolitres of water once all the human bodies decompose.

Pretty interesting huh?

What if you died.

I think this is in the wrong section.

The surface of the earth is 510,000,000,000,000 square meters.

1 litre covers a square metre to a depth of 1 millimeter.

365 billion divided by 510 trillion is 0.0007 litres per square metre.

You'd cover the entire earth in 0.0007 millimeters of water.

Not much of a flood, huh?



Equivalently, 510 trillion divided by 6 billion is 85000 square metres per person, or slightly less than a hectare to spread each person's remains.

I can see it already,

a

You'd cover the entire earth in 0.0007 millimeters of water.

Not much of a flood, huh?

The actual value is even smaller, because the way Random_Overlord calculated the average overestimated the amount of water to be dumped into the system. Using his numbers:

(60 kg + 70 kg)/2 * (0.55 + 0.78)/2 * 6,697,254,041 = 28,948,880,592 kg

If the surface of the earth is 5.1x10^15 m^2, and 1 L covers a m^2 to a depth of 1 mm, then the Earth would only be covered in an additional depth of 0.5676 micrometers. That's less than the diameter of a single E.coli cell.

If the surface of the earth is 5.1x10^15 m^2, and 1 L covers a m^2 to a depth of 1 mm, then the Earth would only be covered in an additional depth of 0.5676 micrometers. That's less than the diameter of a single E.coli cell.

[spoiler=Now I'm scared][/spoiler]