- [Narrator] Today,
we've decided to answer
14 more of our favorite
Colossal Questions
from the comments section
that were too small to answer
but too important to ignore.
Which questions will we pick?
Let's find out on today's
super special episode of--
- [Announcer]
"Colossal Questions."
- [Narrator] First up, what
was the first YouTube video?
It's called Me at the zoo,
and it was posted
on April 23rd, 2005
by one of the guys who started
the site named Jawed Karim.
It's just a 20-second video of
him talking about elephants.
And speaking of first,
lots of you asked us,
what was the first candy?
Well, most experts believe
the very first candies
were made in India.
They grew sugarcane
and would boil its
juices to create sugar.
This concoction
was called khanda.
Is watching lots
of TV bad for you?
Like most things, watching
TV is totally fine,
in moderation.
People who watch more than
four hours of TV daily
have a higher chance of
developing blood clots
and are more likely
to be overweight.
So watch away.
Just don't overdo it.
What was the smallest
dinosaur ever?
Paleontologists are
always discovering
new dinosaur species.
But as of today,
the Parvicursor is the
smallest known non-flying dino.
They were just over a foot
long, weighed just six ounces,
and had long, slender
legs for running fast.
Next up, why is the sky blue?
Sunlight looks white,
but it's actually made up of
all the colors of the rainbow.
Those colors are scattered
in all directions
by gases and
particles in the air.
Blue is scattered more
than other colors,
because it travels in
shorter, smaller waves,
which makes the sky seem
blue most of the time.
What is water made of?
If you've ever heard
someone call water H2O,
that's because, well,
that's what it's made of,
Two hydrogen atoms and one
oxygen atom mixed together.
Why does Swiss
cheese have holes?
For years, scientists
believed that the holes
were caused by bacteria.
But it turns out the culprit
is actually little bits of hay.
It seems that the hay
particles in milk buckets
create pockets as the
milk ages into cheese.
Our next question is a good one.
Why are flamingos pink?
Actually, they
aren't pink at all.
Baby flamingos are born
with grayish red feathers,
but as they age, they
turn light pink or red.
That's thanks to their
steady diet of brine shrimp
and blue-green algae, which
dyes their feathers over time.
Sticking with our funny friend,
why do flamingos
stand on one leg?
Well, the truth is, no
one knows for certain.
It could be to conserve energy
or to help them balance,
but experts can't say for sure.
And sticking with animals,
do cats have nine lives?
Nope, cats only live once.
But the old saying that
cats have nine lives
might have grown out of
their uncanny ability
to almost always
land on their feet
no matter how far they fall.
Why do we lose our voice?
Usually, it's because your
voice box becomes irritated,
which we call laryngitis.
It can be caused by
a viral infection
or just from yelling too much.
Why do we get scabs?
When you get a cut, a scab
helps shield it from germs,
and gives the skin cells
underneath a chance to heal up.
How often do we blink?
Experts say that people blink
15 to 20 times every minute.
That's about 25,000 times a day,
and close to 10 million
times in a year.
We actually spend around
10% of our waking life
with our eyes closed.
Why does soap burn your eyes?
Whenever an outside chemical
like soap gets in our eyes,
it sends them into
self-protection mode.
Your eyes begin to water,
and the blood vessels
inside them enlarge,
giving you red,
burning, bloodshot eyes.
Once the chemical is gone,
your eyes calm down
and go back to normal.
And finally, how do
dreamcatchers work?
Native American dreamcatchers
were hung above a kid's bed
to help them feel safe.
The legend is that good
dreams could trickle down
through the beads and feathers,
but bad dreams get tangled
up and evaporated by morning,
protecting the children
from nightmares.
