By Doug Marman and Alan Rayner
(This article has also been published on BestThinking.com: https://www.bestthinking.com/articles/science/biology_and_nature/genetics_and_molecular_biology/how-can-anything-be-half-alive-)
A new understanding of biology shows that life originates in a community and that individuality evolves when beings work together.
Recently, we published a paper showing a new way of looking at the foundation of life: as a relationship between a lifeform and its habitat. If we use this lens, the origin of life suddenly makes a lot more sense.
Now here comes a new study that’s been reported in The NY Times, Smithsonian.com, The Christian Science Monitor, Independent and others, that identifies the genetic makeup of the cells from which all life on this planet descended. These mother cells are called the “Last Universal Common Ancestor” (LUCA). But the microbiologists who reported this news went on to say that it appears as if LUCA was only “half-alive.” How can anything be half-alive?
By Doug Marman and Alan Rayner
(This article has also been published on BestThinking.com: https://www.bestthinking.com/article/display/2677)
In March 2016, a group of biologists led by Craig Venter announced the creation of ‘independently’ living cells with the smallest genome. Their announcement was hailed as a milestone. The big lesson learned by the biologists is that no one can explain why almost one-third of the genes are needed for survival. However, hidden in the subtext of this study, we believe, is an even more important lesson: The most essential ingredient of life may not actually be genes or a substance of any kind, but rather a relationship.
Let’s take a look at the experiment. The first thing you should know is that the new cells created by these biologists were NOT made from scratch. No one knows how to do that. Here’s what happened:
They started with bacteria that had the smallest genomes they could find. They began deactivating genes, one at a time, to see which ones were needed for survival. If the bacteria lived and kept reproducing, those genes weren’t necessary and were removed.
The Experience of Consciousness vs Knowing Our Own Mind
By Doug Marman
The New York Times just ran an opinion piece that is a good example about how articles on neuroscience often get the big issues wrong.
The author, Alex Rosenberg, isn’t ignorant of the topic. He’s a co-director of the Center for the Social and Philosophical Implications of Neuroscience. In other words, he is fully informed of the science of the brain. So, he clearly has every right to state his opinions. Unfortunately, he misses the point badly.
Right from the opening paragraph, Rosenberg misdirects and misrepresents the issue. I don’t mean to say that he is doing this intentionally. I believe he is stating the problem honestly as he sees it. He’s just using the wrong lens.
Here is how he begins: Ever since Plato, philosophers have made it sound like a truism that we know the reality of our own thoughts:
“They have argued that we can secure certainty about at least some very important conclusions, not through empirical inquiry, but by introspection: the existence, immateriality (and maybe immortality) of the soul, the awareness of our own free will, meaning and moral value.”
The Vital Question — Part I
By Doug Marman
Nick Lane recently published a new book, The Vital Question: Energy, Evolution, and the Origins of Complex Life. It isn’t an easy book to read, but it is packed with the latest research about the evolution of early life, and it offers a number of provocative new theories.
Everything in Lane’s book fits perfectly with the theory of how life began that I presented in Lenses of Perception. However, Lenses fills in some important gaps in Lane’s story. That’s what I’ll be reviewing in this post.
Lane explains why we need to start looking at living organisms in a different way. The question we should be asking ourselves, he says, is not what is life, but how do creatures live? How do they extract energy from the world to keep them going? It’s an interesting perspective.
Lane then describes the process that all living things use to control energy. He even has a good story about where such a process probably began. But he can’t explain how living things gained the ability to intelligently control energy in the first place. This is where current science hits a wall. Fortunately, the Lenses of Perception theory shows a way to understand this missing key of life.