So what we're really getting out of this is information of the structure of the brain, but we can also measure the difference in magnetic properties of blood that's oxygenated and blood that's depleted of oxygen.

I mean, you can have blood flow, but at some point it's also going to want some oxygen.

It pumps the blood and in particular it takes in the blood from the rest of the body.

Acid for blood.

Reptiles were now equipped to colonize the uplands. 300 MYA

Liquid hydrogen and oxygen.

And has concentrated acid for blood.

And our heart actually has two circuits. But I wanna point out these circuits one at a time. We've already kind of completed one circuit.

And these are called the bronchial arteries.

So I'm gonna just take some blue paint to indicate deoxygenated blood or blood without oxygen, I'm gonna paint in how it look.

It's flowing away, and it's a little bit like having someone come by and pick up the trash, then you don't have trash all over the house.

This isn't Volvos this is volcanoes.

Because if you're killed by carbon monoxide, there is such a powerful chemical reaction in your blood as the oxygen is muscled out of the blood stream that the blood cells are turned a bright, cherry red.

So that's one thing what the lungs gonna help me pick up and I'm gonna write O2 for oxygen.

Sometimes you hear people talking about your endocrine system and hormones, sometimes your digestive system.

And then it comes back from the lungs, depicted as red blood, now that it has oxygen in it.

We need to breathe.

You take the body back to the morgue, you run more blood tests, and you find another gas at extremely high levels, carbon dioxide.

Blood oxygenation is good.

We stopped tilling, so that we could prevent greenhouse gasses from going into the air.

Carbon dioxide is exhaled... and oxygenated blood continues passing through the veins... into the left auricle... through the left ventricle, passing out again.

And that wasn't easy because poisons were everywhere.

Trees give off oxygen and absorb carbon dioxide.

Inert nitrogen, high concentration of carbon dioxide crystals, methane...

A very simple example is this When the world was primarily plants, the environment, which had carbon dioxide and some oxygen in it when they first started,

Tropical rainforests produce oxygen and consume carbon dioxide.

The way that's done is by the following

In that general process we talk about the restriction of blood flow, that is ischemia that's happening.

Where have essentially, you have an equal amount and very

And it pumps that blood to the lungs where the blood gets oxygenated.

And that depletes oxygen, and it builds up CO2 in your blood.

That is blue over here in this diagram, because that blood does not have carried oxygen

Royal blood.

Advanced degrees in hematology and biochemistry.

She also goes and says things like, you should eat lots of dark green leaves, because they contain lots of chlorophyil, and that will really oxygenate your blood.

Vampires, they don't need oxygen. Everything just runs directly off the blood.

What is it? Parasite in his bloodstream choking him of oxygen.

The botanical names are in front of you.

It would kind of deliver all the blood to the various organs, then the organs would use up the oxygene, so let me show it kind of now going back to blue.

Something in the blood.

What blood?

Aluminum buffer action, aluminum hydroxide is what we think it is, uh, plus the barium carbonate, strontium titanate, strontium oxides, barium oxides, probably some aluminum oxides in there.

Each cylinder is about 10 percent ancient air, a pristine time capsule of greenhouse gases carbon dioxide, methane, nitrous oxide all unchanged from the day that snow formed and first fell.

We inject our own aerosols into the atmosphere, and we have trace gases, and not just carbon dioxide it's methane, ozone, oxides of sulfur and nitrogen.

This is highly thrombogenic material. Thrombogenic, very fancy word.