# If Every Human Died.....

#### Phillyman

##### Well-Known Member
OP
Member
Ok so I have been thinking about this for a few days now......Everyone is talking about how global warming will raise the sea level. My question is if EVERY human died, how much would the sea level raise? Here are the rough numbers

6 Billion People on Earth
Humans are 60% water
Average weight for a human (160lbs)
A Gallon weighs 8lbs

60% of 160 is 96lbs water

96lbs of water is 12 gallons

12 gallons times 6 Billion is 72 Billion Gallons

Now this is where I am having trouble.......How many gallons is needed to raise the sea level 1 foot.....

#### Skye07

##### Well-Known Member
Member
I've seen a site that predicts what would happen if all people suddenly dissapeared from the earth, there would be some nuclear meltdowns and such, pretty scary stuff

#### FAST6191

##### Techromancer
Editorial Team
I do not like imperial units so I would have to convert.

Still a crude estimate could come from simple sphere volume.
4/3.(pi).radius^3 is volume of a sphere. Get worlds radius and work it out.

#### striderx

##### Well-Known Member
Member
Ok so I have been thinking about this for a few days now......Everyone is talking about how global warming will raise the sea level. My question is if EVERY human died, how much would the sea level raise? Here are the rough numbers

6 Billion People on Earth
Humans are 60% water
Average weight for a human (160lbs)
A Gallon weighs 8lbs

60% of 160 is 96lbs water

96lbs of water is 12 gallons

12 gallons times 6 Billion is 72 Billion Gallons

Now this is where I am having trouble.......How many gallons is needed to raise the sea level 1 foot.....

Surface area of a sphere = 4 pi r²
1 mile = 5,280ft
Diameter of the earth = ~ 7,926mi x 5,280ft/mi = 41,849,280ft
Radius of earth = 41,849,280ft / 2 = 20,924,640ft

Fraction of earth covered by water = ~0.71

1 gallon = 231 inches³
1ft³ = 12in x 12in x 12in = 1,728in³
1 gallon = 231in³ / 1,728in³/ft³ = 0.1337ft³
1 ft³ = 7.4805 gallons

Surface area of earth's oceans = 4 x 3.1416... x (20,924,640ft)² x 0.71 = ~ 3.9064 E 15 ft²

Therefore:

3.9064 E 15 ft² x 7.4805 gallons/ft³ = 2.9222 E 16 gallons/ft to cover the earth's oceans

or

29,222,000,000,000,000 gallons/ft

1,000 thousands 10^3
1,000,000 millions 10^6
1,000,000,000 billions 10^9
1,000,000,000,000 trillions 10^12
or

The water extracted from dead humans would raise the level of the oceans by your calculations:

72 billion / 29.22 quadrillion/ft = 0.0000025 ft

or

0.0000025 ft x 12in/ft = ~ 0.0003 in

or

~ 3 ten-thousandth's of an inch.

Not much. Less than the thickness of a piece of paper.

Goes to show you how big the earth is and how puny humans are... even 6 billion of 'em.

striderx

#### martin88

##### Well-Known Member
Member
So when people die they turn into water?

##### yay p1ngpong.
Former Staff
So when people die they turn into water?
Yeah, that's what I was thinking

The water in our bodies is part of the water cycle. When we are being created the fluid in our bodies comes from what our mother drinks...

#### Skye07

##### Well-Known Member
Member
lol, well technically, most of the body does since a large piece of the body IS water

#### iciclebox

##### Member
Newcomer
Duh!

That's why the put those colorful aquarium pebbles in everyone's coffin.

#### romeoondaline

##### Well-Known Member
Member
No they dont turn into water they disolve with the water since we're 60 percent water

#### BORTZ

##### DO NOT SCREENSHOT
Supervisor
technically the world would never flood completely again...but,
i saw what would happen on the discovery channel. it would take only about 300 years for all of our monuments and buildings to disappear. the more organized=less stable. the longest lasting landmarks would be mt. Rushmore and the pyramids.

#### Skye07

##### Well-Known Member
Member
Concrete tunnel between Europe mainland & UK will survive for thousands of years too

#### Phillyman

##### Well-Known Member
OP
Member
technically the world would never flood completely again...but,
i saw what would happen on the discovery channel. it would take only about 300 years for all of our monuments and buildings to disappear. the more organized=less stable. the longest lasting landmarks would be mt. Rushmore and the pyramids.

I honestly only think the human race only has about 200-250 years left before we die out.

#### romeoondaline

##### Well-Known Member
Member
Whoaaa dude thats not that much AT least give them more haha

#### Phillyman

##### Well-Known Member
OP
Member
So when people die they turn into water?

Yeah, that's what I was thinking

The water in our bodies is part of the water cycle. When we are being created the fluid in our bodies comes from what our mother drinks...

You didn't hear about how all funeral homes now run dead bodies through a human sized Ronco food dehydrator

#### DarkAura

##### Offline
Member
People piss all the time, shouldn't that raise the water level too?

#### Westside

##### Sogdiana
Member
People piss all the time, shouldn't that raise the water level too?
We filter it and drink it again.

#### Seraph

##### Well-Known Member
Member
Aren't humans more around 90-95% water? I don't get how you're getting these calculations either...

There would also be a decrease in the rate of global warming if humans were gone.

Only 200-250 years left seems kind of too short also.

#### Deleted member 110780

##### WRYYYYYYYYYYYYYYYYYYYY
Member
lollllllllll Waterworld and Tank Girl references.

#### ZzzZilla

##### Well-Known Member
Member
Philosophically, this is the scientific version of "If a tree fell in the forest and no one was around to hear it..."

#### dakeyras

##### Well-Known Member
Member
I've seen a site that predicts what would happen if all people suddenly dissapeared from the earth, there would be some nuclear meltdowns and such, pretty scary stuff

I've seen some sites where it says that if all people would happen to disapear pink donuts will take over.

Aren't humans more around 90-95% water?

Somewhere between 45 to 75 percent of the body weight, depending on how much fat or muscle tissue your body contains.

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