Two years ago I put some soil and some plants inside of this jar and I sealed
it so it was airtight and throughout that time
I haven't opened it no air has gotten in or out and I've watched as plants lived
and died and that whole time I've been wondering how much bigger would a jar
need to be that it was just big enough that a human like me could survive
inside of it and so I just finished building this it's a thirty thousand
litre jar and I'm going to seal myself inside of it and see how long I can
survive on the inside so the frame is made out of wood and I've covered it in
greenhouse plastic there is one continuous sheet of plastic going the
whole way around and then I wrapped it like a present a present of danger it's
happening I sealed the outside with duct tape and then I sealed the inside with
duct tape and then I went over everything that I thought might be a gap
with silicone so it is airtight but the interesting stuff is inside so I want to
give you a tour of that so this is my bio dome it is filled with about 200
plants about 80 liters of water I've got a bunch of air monitoring equipment over
here and cactus that you might be familiar with there is a hammock over
here my nice little resting nook I've got some lights that are mostly just for
me I built in an airlock because maybe they'll be something that I forgot to
bring in but this way I can open my side and put something in to give to them and
then seal it and they can open their side or vice versa as long as one is
always closed at a time then less than half a liter of air will get out or in
don't want air getting in right least I should say do not try this at home in
case you're wondering just how dangerous this is I actually asked
Patrick Kelly from the YouTube channel core porous hey so this whole thing
seems like a terrible idea right like something was bound to happen to Kurtis
his body well if you're interested in the human physiology at play and some of
the safety precautions that he took going into it you can go ahead and click
on that eye right there to see that video over on my channel core porous I
know a lot about biology but not that much about human biology and that is
what he's an expert in and also I didn't particularly want to make a video about
all the ways that this could kill me because I want to sleep at night this is
one of the most important sensors in my experiment it measures oxygen oxygen is
the reason that we breathe but as you can see the air we breathe is only about
21% oxygen and that's because most of the air over 78% of it is
nitrogen so while our atmosphere is mostly nitrogen and oxygen
it's that remaining one percent that I have most interested in and most
concerned about because those gases can be deadly but I'm gonna be talking about
that in my next video we live in an age where we are going to have to start to
think much more carefully about the air we breathe and how we manage that and so
while I'm in here I'm going to be making a sort of crash course video series on
YouTube about the air and how we interact with it and how our
interactions affect the environment and about how that affects us I'm also going
to be doing an experiment to see just how long I can survive in here without
causing any harm to myself let's find out it is three minutes after midnight
on the 24th of October I am now sealed inside of this jar so the project starts
now