November 30, 2022

Black Death’s mysterious origins revealed in new DNA analysis

4 min read


More than two years after the virus first appeared in China, we still do not know how it spread to the human population or which animal hosted the virus before this important event.

Humans have been living with germs since their earliest days, but now weLive in the age of epidemics.Dr. Larry Braillent, CEO, Pandefense Advisory, a network of epidemiologists working on epidemiological response, said this week’s interesting findings.

This is Katie Hunt, who stands for Ashley Strickland in this edition of Wonder Theory.

The photograph is of a tomb in Kyrgyzstan, where a plague has spread, leading to the possibility of black death.

The Black Death was the world’s most devastating plague. Estimated to be Killed half of Europe’s population in just seven years during the Middle Ages.

Historians and archaeologists have been trying for centuries to pinpoint the source of this epidemic, and now science has come a long way.

Traces of the diseases that made our ancestors sick – including the plague pathogen – can be found hidden in ancient DNA from human remains.

Genome sequencing of the plague bacterium Yersinia pestis, now found in teeth extracted from two burial sites in Kyrgyzstan. Maybe the puzzle is solved The Mysterious Beginning of Black Death

Unanswerable creatures

The life of Mastoden, an elephant creature that roamed across North America 13,000 years ago, is illuminated by the study of its teeth.

For the first few years of his life, he was the son of an uncle – before moving out on his own, who now lived near home with a herd of women in Central Indiana. Mastodon He died at the age of 34, when another male mastodon had a puncture in the right side of his tooth. skull.

Of creation Tusks store biochemical information absorbed from shrubs and trees and water it. Used, enabling scientists to piece together for the first time Where animals Travel Throughout his life.

Across the universe

This is an artist's impression of a black hole passing through our Milky Way galaxy.

We have the most complete map of the Milky Way so far, our home galaxy, and it is showing us some beautiful things.

There are some stars in the Milky Way. Strange and unexpected “tsunami-like” star tremorsNew data from the European Space Agency’s Gaia space telescope has been revealed. This movement also changed the shape of some stars.

Hubble, another space telescope scanning the skies, discovered an equally fascinating cosmic event.

The hidden, ghostly remains of a once-shining star pass through the Milky Way. This is the first time. A moving black hole has been detected. – Although astronomers believe that 100 million such objects are floating around.

Wild kingdom

The difference between dominant male and female females One of nature’s most enduring gender stereotypes. A new book, Bitch: On the Female of the Species, dispels this misconception and tells a more complete story about the role of women in the wild.

According to author Lucy Cook, female creatures, like their male counterparts, are prejudiced, competitive, aggressive and dynamic, and play an equal role in advancing evolutionary change.

His work details the life of a row. The colorful animals will shake your assumptions about what it means to be a woman: the killer Mercury mother, the unfaithful Bluebirds and the female dolphin. An unusual strategy In the war of sex

The weather has changed.

In March 2015, an adult female polar bear (left) and two 1-year-old cubs walk on ice-covered freshwater glacier ice in southeastern Greenland.
There are polar bears. Being thin and having fewer children As a result of melting sea ice in their Arctic habitat, scientists say, But a new discovery could offer a ray of hope.
O A significant population of polar bears lives in fjords in southeastern Greenland. Shows How can this generation survive? As the climate crisis intensifies.

Unlike most polar bears, which hunt seals on sea ice and roam far and wide, this isolated population has adapted to live in a small habitat and hunt on freshwater glacier ice.

“If you are concerned about species conservation, then yes, our results are promising.” Said Kirsten Ledry, a polar research scientist at the University of Washington’s Applied Physics Laboratory. “But I don’t think so Glacier habitat will support a large number of polar bears. That’s not enough. “

Discoveries

Surprise these stories:

– The wreckage of a warship On his last trip, he took a royal VIP. Debris from 340 years ago has been found off the coast of England.
– Scientists have discovered. Why are cats so crazy about cats? And it serves a more useful purpose than to intoxicate our philanthropic friends.
– Artemis I Mega Moon Rocket is ready for this. The fourth attempt of the last pre-launch test. Keep these fingers crossed.
As you have read? Oh, but there’s more. Sign up here. To receive the next edition of Wonder Theory in your inbox, brought to you by the author of CNN Space & Science. Ashley StricklandExploring the wonders and discoveries of the ancient world on planets outside our solar system.





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