Have you guys ever seen those interviews
with celebrities where they answer
Google's most asked questions well I
figured why not do that but with the
most common science questions that
people are asking
besides answering what people are
actually wondering I figured it might
help grow watch time which is always
nice so let's jump in first up why is
the sky blue
well not that I recommend it but if you
look straight up at the Sun it would
actually look white or slightly orange
is yellow that's like that's making a
straight path from the Sun to your eyes
but if you look at the sky somewhere
else
you can still see things that's because
when light hits that part of the sky
some of it bounces off and travels your
eye
think of it like when you're standing in
front of a wall you can see the wall
because the light hits it and comes back
to your eyes now imagine you're standing
in front of a dark cave you look out
into the cave and all you see is
darkness that's because there's nothing
for the light to bounce off of and if no
light bounces back to your eyes you
can't see anything so now back to the
sky because blue light has a shorter
wavelength than red light it runs into
more oxygen molecules for a given path
and so it's reflected more so when you
look at the sky a lot of short blue
light is reflected and not a lot of
longer red light is and so that leads
you seeing a blue sky next up why do
dogs eat grass a lot of people think
it's to reduce vomiting if they have an
upset stomach kind of like what all
those action heroes do when they've been
poisoned in movies but there's not a lot
of evidence to support this first off
only about a quarter of dogs vomit after
eating grass and many dogs distant
relatives like wolves and coyotes
regularly dabble and plant-eating a good
explanation of why dogs eat grass is for
the same reason they eat your slipper
when you leave it unattended they just
like to eat things next why am I so
tired well you're probably not getting
enough sleep most adults need between 7
to 9 hours of sleep a night on top of
that being sedentary a lot can make you
feel tired so oddly enough exercising
regularly can make you feel less tired
throughout the day but obviously if you
have concerns about yourself you should
be asking your doctor
not Google next up why do cats purr we
don't a hundred percent know the answer
to this one
normally cats only purr around their
mothers and their kittens so when they
purr around humans it might mean that
they think of a sort of like an adopted
family there's also the possibility that
at least some cats purr to elicit a
response from their human companions
whether it's someone in petting food or
just attention there's even some
evidence to suggest that purr occurs at
a frequency that can increase their bone
density so maybe that's why they're so
good with Falls
why is my poop green with all the
information that Google collects these
days that's an odd thing to be telling
them but it's pretty straightforward
this just happens when food moves
through your intestines too quickly the
green color comes from bile and isn't a
concern if it happens once in a while
just be sure to eat some fiber and maybe
some of that yogurt Jamie Lee Curtis is
always talking about let's switch things
up who who discovered electricity just
googling it will tell you Benjamin
Franklin for his well-known experiment
where you flew a kite in a thunderstorm
allowing him to collect ambient
electrical charge in a jar but this
ignores a lot of people like Michael
Faraday who discovered that moving a
magnet through a coil of wire produces a
current and Luigi Galvani who shot dead
frogs to watch them twitch despite a
weird that sounds this was important to
realizing that the same electrical
pulses seen in lightning govern how
muscles move and contract who discovered
penicillin Alexander Fleming discovered
penicillin the first antibiotic after he
failed to clean his petri dishes before
leaving on vacation when he came back he
found bacteria covering his petri dishes
except around an area where a piece of
mold was growing although it would keep
the largely forgotten Howard Florey
to figure out how to refine penicillin
for to be used as an antibiotic saving
an estimated 200 million lives who
discovered DNA this one's a bit of a
controversial one DNA was first
identified in 1806
by the Swiss chemist Johann Friedrich
Miescher not Watson and Crick who also
stole Rosalind Franklin's data in the
first place while he was trying to
discover the key components of white
blood cells when he put the cells in
acid he noticed something separate out
of the sole
and he got it to dissolve again by
adding a base he named the mysterious
substance nucleon because he thought it
came from the nucleus unbeknown to him
Kidd actually discovered DNA I hope you
enjoyed getting a little smarter with us
if there are any other questions you
want answered
we should have leave them in the
comments down below and if you like this
style of video be sure to let us know
that - have a great day and remember
there's always more to learn
