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Latest blog posts from Pablo's Origins Blog

DNA
Let’s talk about DNA. The genetic code is the blueprint used to build our bodies and that of every living being. At the very beginning of the 20th century, it was already known to scientist that the code was in genes, which in turn resided in chromosomes. In this series of articles I want to...
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Published 3 weeks ago

Fossils
Ancient microbial fossils are exceptionally rare. Those fragile fragmentary clues may help us bridge the vast gulf between life and non-life. Ancient rocks may reveal key steps in the origin of life. It is true that they are difficult to find, but it’s well worth the effort, because Earth’s...
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Published 3 weeks ago

Evidences of Life on Mars - Part 2
So, what was the basis of McKay’s claim? Did they find convincing evidences of life on Mars? In their Science paper, McKay and his eight coworkers pointed to four types of data. Given their extraordinary claims, they were on scientific trial by the rest of the scientific community. Let’s go...
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Published 3 weeks ago

Evidences of Life on Mars
Here I want to talk about the possible evidences of life on Mars. Rocks from space constantly bombard our planet. A few of these visitors make it through the atmosphere without burning up, which are called meteorites. Of the thousands of meteorites that have been collected on the Earth surface,...
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Published 4 weeks ago

Is There Life on Mars?
Is there life on Mars? Few questions, scientific or otherwise, fire the public imagination as much as this one. From H.G. Wells to David Bowie, speculations about Martian life have been a pervasive part of popular culture. There is a good reason for this intense interest: Mars is our planetary...
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Published a month ago

Origin of Life
The first chapter of Genesis contains the Christian account of the origin of life. It tells of God creating the heaven and the Earth, plants and animals, and then man in God’s image. All in six days. The Bible doesn’t state when this creation occurred, but most early Christians probably...
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Published a month ago

Examples of Natural Selection - Part 2
Here I will show you more examples of natural selection. Darwin’s thinking about natural selection and evolution was profoundly influenced by his observations of island organisms. Among them was a remarkable group of birds that he observed in the Galapagos Islands, collectively now known as...
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Published a month ago

Examples of Natural Selection
Here I want to show you some examples of natural selection to make it clearer how it works in nature. We call natural selection a theory, but it is a testable theory and has been tested many times. Darwin, when he proposed it, could only turn to examples of artificial selection, the breeding of...
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Published a month ago

What is Natural Selection
What is natural selection? Darwin’s main contribution was not to establish that evolution occurs, although he helped in that regard. His great achievement was his theory of natural selection. In a nutshell, Darwin’s theory runs as follows:• There is heritable variation in a population.•...
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Published a month ago

Darwin and Evolution - Part 2
Let's continue here what we left in our left article about Darwin and evolution. It was his opportunity to serve as the naturalist on the Beagle that provided Darwin with his first insights into how evolution might work. In fact, it was this voyage that changed his worldview and convinced him...
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Published 2 months ago

Darwin and Evolution
The words Darwin and evolution are nowadays associated in our minds. Nowadays,also, biologists take for granted that evolution occurred, but that wasn’t the case 150 years ago, when Charles Darwin introduced his ideas. As a boy, young Charles developed a keen passion for nature. He was the kind...
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Published 2 months ago

Darwin’s Theory of Evolution
Nowadays, biologists take for granted that evolution occurred, but that wasn’t the case 150 years ago, when Darwin’s theory of evolution was introduced. Evolution is a simple and obvious idea if you think about it, but we needed Darwin to discover it. This series of articles covers much about...
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Published 2 months ago