| Credit: Ambrogio1997 |
Har aldrig hört talas om detta tidigare.
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Some bacteria have "devolved" to a point where they are scarcely even alive anymore, while some viruses (known as giant viruses) seem to be very much alive, at least compared to other viruses! The boundary between living and non-living is getting...messy.
Is anyone surprised?
| Credit: pitpony.photography |
I blogged about this before (see second link). This seems to be the sequel! So there is a hypothesis that the evolutionary ancestors of the eukaryotes (a vast group of organisms including animals, plants and fungi) were Archaea. Asgard Archaea, more exactly. Or perhaps some unknown microbe living in symbiosis with a bacterium *inside* an Archaeon? The content linked below isn´t entirely clear on this topic, but some kind of hybridization is the bottom line.
The problem, apparently, is that the bacterium participating in the primordial merger needed oxygen to survive. Asgard Archaea, on the other hand, can´t stand oxygen. However, recent research suggests that some of them actually can do so, making the scenario more plausible.
Personally, I like the fact that our deep evolutionary ancestors might (at least partially) be tentacled micro-organisms named after the abode of the Norse gods, and that some of them have been found in a remote part of the Atlantic Ocean named after Loki. Life looks like a "trickster", somehow...
A somewhat shambolic controversy back in 2007 involving the religious sect I mentioned earlier, Community of the Many Names of God and its Welsh ashram Skanda Vale. The ashram wanted to save one of its bulls, Shambo, from being slaughtered after the animal tested positive for TB. Note the ethno-politicking involved in the case! From Wikipedia, but seems to be fully sourced.
OK, this was interesting. Why did the Great Plague reach Europe when it did (1347)?
New research suggests that the reason was a severe famine in southern Europe caused by volcanic eruptions, perhaps in Africa. The Italian city-states activated their sophisticated trade networks to obtain grain and lifted a previous embargo on trading with the Mongols north of the Black Sea. Unfortunately, the grain from that particular part of the world was infected by fleas acting as a vector for Yersinia pestis. The rest is history.
Note that Anton doesn´t mention the usual cannard that the Mongols started the pandemic by catapulting infected corpses over the city walls of Kaffa...
In other words: globalization leads to more pandemics. Which doesn´t mean that global trade networks are necessarily bad. It does mean that we have to develop medical science (hint hint)...
There is something strangely reassuring about our ultimate evolutionary ancestors being "Asgard Archaea" found inside "Loki´s Castle" in the Atlantic Ocean midway between Iceland and Svalbard.
The hypothesis is that an archaeum captured a bacterium...and this became the first eukaryotic cell. All (?) extant living creatures which aren´t Archaea or Bacteria are Eukaryota, including humans. The idea that our evolutionary ancestor was a hybrid between two different lineages (presumably combining the best traits of both) is obviously also appealing. Are you listening, Lynn Margulis?
Note also that we are no longer bacteria "cladistically speaking", but rather archaea. Thank you. Always considered archaea to be more cool somehow!
This is us now.
Poor Murray Bookchin. He railed against these kinds of ideas already 50 years ago, but it seems science wasn´t on the old man´s side, LOL. (Yes, this is a *very* in-house comment.)
Another installment in the apparently never-ending saga "the bacteria created us (and all higher life) through endosymbiosis". Dependent origination, anyone? If there is grandeur in this view of life is, perhaps, another question entirely...
Oh, and since the hybrid was created in a lab under difficult conditions, creationists and ancient alien true believers will have a field day with this one!
Another thing to worry about...
Scientists are trying to create something they call "mirror life". Specifically bacteria with molecules that bend in the "wrong" direction.
Catch: They can kill us all.
The hall of mirrors just became the little shop of horrors. In other news, Fidel Castro´s secret love-child is about to resign as Redcoat PM...
Some slightly disturbing studies suggest (but don´t definitely prove - yet) a connection between autism or social anxiety disorder and...wait for it...the bacterial biome in our guts! Not only that, bacteria may have caused or at least enhanced our evolution towards intelligence, either by somehow stimulating the intelligence itself, or by doing something to the energy metabolism of our primate ancestors which made it possible for them to develop bigger brains.
Chapter two of the saga "we are controlled by micro-organisms"...
The philosophical/existential implications of this video are downright *staggering*. Staggering, I say!
For a very long time, humanity assumed that we were at bottom spiritual creatures, with a soul and so forth. But according to recent research, we are actually *created by mitochondria to enhance their survival*, the mitochondria being bacterial endosymbionts which still retain a certain amount of independence after billions of years of co-evolution with their hosts.
Since these bacteria need oxygen to survive, they have "created" bodies with lungs which can process...oxygen. Richard Dawkins once said that we are machines programmed by our genes. But if the man above is right, we are programmed by *another organism entirely*. It even controls our psychology (i.e. our most basic states of mind) and perhaps even our ageing!
AAAAAAAAAAAAAAAAARGH...
| A comb jelly Credit: Steven G Johnson |
A kind of weird experiment, would probably have been considered cruelty to animals had it not been a primitive/basal jellyfish-like organism, so the RSPCA and the ALF don´t give shit! Still, I suppose the ability to "reverse aging" is...interesting. What a pity it´s only cnidarians, comb jellies and the dog tapeworm (!) that has this unusual ability.
This sea creature can age in reverse
The next link goes to a Wiki article about "Ming the Mollusk", a quahog clam and the oldest animal ever recorded. Or rather "the oldest individual (non-colonial) animal ever discovered whose age could be precisely determined". Yes, it was 507 years old when it was captured and killed (!) off the Icelandic coast. So this damn mollusc was older than our industrial civilization?!
And if you absolutely want to read Wikipedia´s confusing list of the oldest organisms ever-ever-forever (many considerably more ancient than poor old Ming), you can find it here. I *think* the absolutely oldest living "things" ever were bacterial spores found in New Mexico which were revived after 250 million years. And then there´s the story about the scientist in California who sold "Amber Ale" produced with a 45 million year old revived yeast!
Somehow, I find that hard to believe.
| "Ridiculous, it´s not even peer reviewed yet. But sure, if they ever ask, I could tell them a thing or two about unknown forms of life!" |
Are the Why Files actually anti-establishment? Some scary facts/speculations about United States bio-weapons research, ditto terrorism, weaponized tics (!), and - above all - really bad security.
But COVID isn´t an escapee from a US-financed bio-lab in China, naaah...
Makes me wonder whether the Montauk Monster and similar mutants were just decoys to distract us from the real story!
| Credit: Dheerav2 |
Previously posted on July 6, 2020. Reposted due to the extreme weather conditions all over the world (including Sweden) this summer.
Erika Bjerström is a Swedish reporter and former environmentalist activist. "Klimatkrisens Sverige" is her recently published book about the climate crisis. Or rather the climate crisis in Sweden. It´s interesting comparing it to Jonathan Jeppson´s "Åtta steg mot avgrunden", reviewed by me elsewhere, another book on the climate crisis published in 2020 by a Swedish journalist. Jeppson´s book sounds apocalyptic, while Bjerström describes the climate crisis as something creeping and gradual. Ironically, this actually makes her book *more* scary than Jeppson´s. Although I don´t doubt that climate change could lead to apocalyptic consequences, the apocalypse meme as such feels old and worn out. We are being sold one every other week, it seems. But what if climate change is instead a slow decline that sneaks up on us, becoming "the new normal", until it´s suddenly too late? (Btw, I don´t believe Jeppson and Bjerström necessarily disagrees on the facts. I´m refering more to the general atmosphere of their respective books.)
When I watched BBC´s "Frozen Planet II", I assumed the stromatolites shown at the end of episode 4 were computer animated rather than real. However, it seems the film crew *did* dive in Lake Untersee, a lake in Antarctica with a permanent ice cover that may have persisted for 100,000 years.
And under the ice they filmed the previously mentioned stromatolites, bizarre structures created by myriads of cyanobacteria (the organisms previously known as blue-green algae). Perhaps inevitably, scientists find these extremophiles very interesting...since they may suggest that life is possible at Mars or Europa! Go figure.
But sure, I also go quasi-religious when I watch stuff like this, although in my case BBC´s descent into this Hadean world (did you know there are literal *deserts* in Antarctica complete with sand dunes?) rather invoke feelings of the utterly ineffable grandeur of Shiva the Destroyer...
A scary YouTube
clip arguing that the “Neolithic decline” was caused by none other than our
good ol´ friend Yersinia pestis. After killing off a large portion of the farming
population of Old Europe, the continent became easy pray for the Indo-European invaders.
Not sure
if I buy this. The genetic evidence suggests a mass die off of *male* lineages,
while female lineages survived and “intermarried” with the Indo-European conquerors.
Is there any other plague pandemic in world history during which men are extremely
disproportionately affected?
That being
said, the pesky bacterium have apparently been found at Neolithic sites…
| An eukaryote (cladistically speaking) |