Category: Unsettled Science

The Sound Of Settled Science

We are all mutants now…

We are all mutants. The 3bn pieces of DNA that make us who we are were long thought to be constant, chiselled in granite like a classical monument, with only tiny changes made here and there. Scientists used to believe that DNA mutations were largely harmful.
By the late 1990s and early 2000s, as the first sequences of the human genome came rolling in, researchers realised that their view of mutations was completely backwards. Instead of being rarities that almost inevitably harm health, mutations litter the human genome. The average human carries around 400 unique mutations, and most of us are none the worse because of them.
This challenged some basic tenets of genetics, as well as they ways that scientists and physicians interpreted genetic tests.

Bacteria Found in Alzheimer’s Brains

This may turn out to be signficant;

Researchers in the UK have used DNA sequencing to examine bacteria in post-mortem brains from patients with Alzheimer’s disease. Their findings suggest increased bacterial populations and different proportions of specific bacteria in Alzheimer’s, compared with healthy brains. The findings may support evidence that bacterial infection and inflammation in the brain could contribute to Alzheimer’s disease.

Stay tuned.

GIGO

When the bosses said make it warm, “scientists” at NOAA, NASA and Hadley CRU asked, “How high?”

“Thus, it is impossible to conclude from the three published GAST data sets that recent years have been the warmest ever – despite current claims of record setting warming,” according to a study published June 27 by two scientists and a veteran statistician.
The peer-reviewed study tried to validate current surface temperature datasets managed by NASA, NOAA and the UK’s Met Office, all of which make adjustments to raw thermometer readings. Skeptics of man-made global warming have criticized the adjustments.

Garbage in, garbage out.
Related: Airbrushing the Inconvenient Pause out

The Sound Of Settled Science

New York Times;

Fossils discovered in Morocco are the oldest known remains of Homo sapiens, scientists reported on Wednesday, a finding that rewrites the story of mankind’s origins and suggests that our species evolved in multiple locations across the African continent.
“We did not evolve from a single ‘cradle of mankind’ somewhere in East Africa,” said Philipp Gunz, a paleoanthropologist at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and a co-author of two new studies on the fossils, published in the journal Nature. “We evolved on the African continent.”

Except for the space aliens currently in control of the Democratic Party.

The Sound Of Settled Science

Consensus;

The salt equation taught to doctors for more than 200 years is not hard to understand.
The body relies on this essential mineral for a variety of functions, including blood pressure and the transmission of nerve impulses. Sodium levels in the blood must be carefully maintained.
If you eat a lot of salt — sodium chloride — you will become thirsty and drink water, diluting your blood enough to maintain the proper concentration of sodium. Ultimately you will excrete much of the excess salt and water in urine.
The theory is intuitive and simple. And it may be completely wrong.

h/t nv53

The Sound Of Settled Science

WILMA!

Homo naledi is primitive in some ways, with a small brain and other physical features reminiscent of our early ancestors. But it also walked upright, and had hands that may have been capable of making tools.
This perplexing combination of features raised questions about when the animal walked the Earth. But in new research published Tuesday in eLife, scientists have come to the conclusion that it lived between 335,000 and 236,000 years ago. That’s only about a tenth of the age some experts previously predicted.
It suggests that this humanlike creature may have lived alongside early humans, or Homo sapiens. “It’s a much more complex picture of human evolution that is rising,” lead author Paul Dirks of James Cook University and the University of Witwatersrand tells The Two-Way.

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