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Wait… she had a dog? The La Brea Woman was found in close association with the remains of a domesticated dog. Her remains have been dated to between 9,000 and 10,000 years ago. Were there dogs that early in North America? How long ago were dogs domesticated?
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Footprints in the sand, stone, and on the moon Fossils aren’t just remains of animals. Some of them are materials and marks left by organisms as they went about their lives. Called “trace fossils,” they are, instead of a snapshot of death, a snapshot of life. Here are some articles about the traces humans left …
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The tar pit tar pits In the previous episode we talked about where the oil that formed them came from. Today, we talk about the fossils found in them. Located in the middle of a major city, the La Brea Tar Pits have given up fossils as much as 55-thousand years old. Here’s a link …
Between technical difficulties, research and recording, I’ve just barely managed to squeeze in some time to do some little chores with the code for my artificial life experiment software. I call my subleq based digital organisms “figures.” The very next thing is to implement save and restore functions, so I can keep a population and …
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Fossils in fossil fuel Around the same time that the ancestors of humans branched from the apes, organic sediments were being laid down that would eventually turn into oil. Some of this oil worked its way along fault lines, and began seeping out of the ground at the surface. Located in L.A. these tar pits …
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Shadows in the stone The Burgess Shale is a deposited of shale that was formed from large underwater avalanches that berried organisms around a half-billion years ago, preserving the soft parts of the bodies. However, the fossils have been squeezed down to a thin layer of carbon, leaving shadows of what the creatures once were. …
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Learning the most from the least Not all fossils are large bones of things like dinosaurs or mammoths. Some of them are small enough to require a microscope in order to identify them. Called microfossils, these tiny fragments, and even remains of single-celled organisms, can tell us a good deal about things like the climate, …
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Digging up the past When I was a child, my family visit a dig site. They were excavating fossils of mammoths. Before we get back to examining natural history, we’ll spend a few episodes finding out where the evidence for the story comes from. Here is a link to the hot springs mammoth site. Mammoth …
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Trees eyes and antlers Sometimes, very different organisms can end up having traits in common, even though they didn’t share those traits with an ancestor. Instead, different systems, solving similar problems, can come up with similar answers. Here’s a link to the episode on eyes. Ep 78: Eyes Here’s a link to an article about …
In episode 144, I oh so casually mentioned that I was getting some runtime errors. They don’t happen in every run, but the fact that they happen at all is a problem. My artificial life system will eventually be running for days at a time as I do different experiments, and I can’t have these …