Millions of years earlier, that dust had actually been living organisms, diatoms. Single-celled algae that once floated in ancient seas. But now, in the dunes above the river, all that remained were their fossilized exoskeletons.
And time is reflected in our age. So the one-celled human embryo, yes, isn't rational, conscious, or self-aware in that moment, but ultimately isn't able to do those things or be that way because of how old she is.
And most importantly, I think, and what will cause the largest change, is cellular agriculture, essentially redesigning these single-celled organisms to create things like meat. Right now on Earth, our ecosystem is being ravaged by meat production.
So criticize that. Then choose the right thing to explain. But in single-celled life, so in bacteria, you have a quite different shape.
These problems happen here in California as well. You're double-celled . You're expected to work.
We talk about it and then we realize what could be done to make it better. The yeast is a single celled organism, it likes to eat sugar, which we extract from the barley, and it gives off the alcohol, which we like and keep that
OK, so what is a brain-eating amoeba? It's a small single-celled organism that is found in warm, fresh water. If it's inhaled through your nose-- not in many cases, in a few cases it gets into the upper part of your nose,
There are branchings and then divergence. This process began with single-celled life. We don't know the original forms, but based on what we know about single-celled organisms now, the picture to have in your mind is not
It looks more like a vegetable. But scientists broadly divide multi-celled animal life-- the metazoans, which includes us-- into 34 categories. And those are called phyla, P-H-Y-L-A.
I want to present you with a design problem. All life on the planet started as single-celled life. And they did lots of things like grew bristles which were sensitive.
The first great leap in evolution was competition to cooperation in nucleated cells. The second leap was competition to cooperation into multi-celled creatures. DR. RACHEL MACNAIR: Killing tends to make us mentally ill.
But now, you get more complex systems. You've built up from the yeast to multi-celled organisms. And there begins to be this brain, which is really quite incredible.
This is from my friend Matt Ridley, wonderful evolutionary biologist and journalist. And then we have a period of single-celled eukaryotes.
and 700 nanometers into energy, absorb that energy, and then turn that into glucose using the carbon dioxide in the air, the water from the soil, and so on. And in this case, the single-celled organism was obviously in the sea so there was no soil there in that sense. But that was the birth of the first plant cell , if you will.
We had very little time to equip the boat. And so protists are beautiful creatures, single-celled .
So what is giving up and what is just deciding to do something else? Suddenly you've got a cell and suddenly that cell has more possibilities-- a two-celled organism.
three and half billion years ago. Multi-celled creatures arose around 650 million years ago and they were complicated enough to need some method of communication between their sensing
50 years out of billions of years, as going back to single-celled organisms, is also nothing.
Deeper down and further back in the past, we can find evidence of early single-celled life in that middle section of rock
We’re talking transparent sea cucumbers, saucer-sized single-celled organisms, and shrimp-like critters that eat sunken wood.
Why do they taste the way they are? You have to understand that about 2.7 billion years ago, you had these single-celled organisms that were largely dominating the planet, if you will. They made very interesting choices.
And here's the problem. Right. The rapidity with which oxygen was produced did not give plants or these single-celled plants enough time to adapt to a high oxygen environment.
Probably the most dramatic example of information deployed in the service of life is the development of the embryo from a single-celled zygote.
Less than a billion years later, the first one-celled organisms appeared on Earth.
If someone objects to the idea that the embryo is alive, I think another good question to ask is this, is the embryo growing? At the moment of fertilization, when you have a one-celled embryo, is that one cell growing into two, and are those two growing into four and eight and 16, and so forth? And if yes, wouldn't it follow by virtue of the embryo's growth, the embryo must be living?
on abilities or age, but instead acknowledge human rights based on being human. And we know at the moment of fertilization, the one-celled embryo has all the genetic material distinguishing her from the mother and the father, and from that point forward you're going to change your appearance, you're going to change your abilities, you're going to change your age, but your human identity
This process began with single-celled life. We don't know the original forms, but based on what we know about single-celled organisms now, the picture to have in your mind is not little cells that are self-contained little islands, but systems that are open to the world, sensing and responding, exhibiting behavior,
This is from my friend Matt Ridley, wonderful evolutionary biologist and journalist. And as you can see, the bacteria and the archea are the first single-celled organisms.
These problems happen here in California as well. But in California, inmates who are on Death Row are single celled , they're either in their cells watching TV or they're out on an exercise yard.
And were any challenge-- I guess, was any challenges for the physicality, going from a single celled organism to multicellular?
And I ask the question, what if strong AI bears the same relationship to today's narrow AI as multicellular life does to its single-celled forebears?
Is a person someone who is rational, conscious, and self-aware, so that if you're not those things you're not a person? Well, what I like to do is ask the question, why isn't, let's say, a one-celled human embryo, at fertilization-- why isn't that embryo rational, conscious, or self aware? I think we know the answer to that, is, well, the embryo is lacking the organ necessary to be rational, conscious, and self-aware,
So basically, in the most brief terms, there were two types of single-celled life
Well, these are the questions that are unanswerable because our evolutionary cycle of history from being single-celled creatures until the present coming out of the material Universe
I mean, 10 seconds ago, we were all in the slime as single-celled creatures.