National Geographic Kids - USA (2021-12)

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The left lung is

about 10 percent

smaller than

the right one.

You lose about

(^) 9 pounds of
skin cells every year.
A runner
can lose
4 cups of
sweat in
1 hour.
Your
stomach acid
is strong enough
to dissolve an
iron nail.
The
human
heart beats
more than
3 billion
times in an
average
life span.
HUMAN TEETH ARE JUST
AS HARD AS SHARK TEETH.
SOME
ETHNICITIES
HAVE
STRONGER-
SMELLING
EARWAX
THAN
OTHERS.
Scientists
estimate that
the NOSE can
RECOGNIZE
A TRILLION
different
SCENTS.
The nails on your
writing hand likely
(^) grow faster than
(^) the ones on
your other hand.
Humans
are the only
species
known to
blush.
ALTOGETHER,
YOUR BLOOD
MAKES UP ABOUT
8 PERCENT
OF YOUR BODY
WEIGHT.
THE AORTA—AN ARTERY CONNECTING
TO THE HEART—IS ROUGHLY THE
DIAMETER OF A GARDEN HOSE.
Red marrow—
a tissue in your
bones—produces
8 million new
blood cells
a second.
YOUR BRAIN is
sometimes MORE
ACTIVE when
you’re ASLEEP
than when
you’re AWAKE.
Researchers
discovered nearly
2,400 species of
bacteria —many new
to science—in
people’s belly buttons.
BUT
DON’T
TRY THAT
AT HOME—
OR ANYWHERE ELSE!
SOME
PEOPLE’S
SNORES
ARE
LOUDER
THAN A
VACUUM
CLEANER.

HUMAN BODY

the sounds of a volcano,

the darkness of the

deep ocean, and the

super-scent abilities of

animals in the new

National Geographic series

Explore

Grab a parent to check

it out on Disney+.

Welcome to Earth.

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