Showing posts with label BBC News. Show all posts
Showing posts with label BBC News. Show all posts

Wednesday, July 7, 2021

Ancient Human Discovered

Researchers working in Israel have identified a previously unknown type of ancient human that lived alongside our species more than 100,000 years ago.

They believe the remains uncovered near the city of Ramla represent one of the "last survivors" of a very ancient human group.  The finds consist of a partial skull and jaw from an individual who lived between 140,000 and 120,000 years ago.

Details have been published in the journal Science.

The team members think the individual descended from an earlier species that may have spread out of the region hundreds of thousands of years ago and given rise to Neanderthals in Europe and their equivalents in Asia.  The scientists have named the newly discovered lineage the "Nesher Ramla Homo type".

Dr Hila May of Tel Aviv University said the discovery reshaped the story of human evolution, particularly our picture of how the Neanderthals emerged. The general picture of Neanderthal evolution had in the past been linked closely with Europe.
 
"It all started in Israel. We suggest that a local group was the source population," she told BBC News. "During interglacial periods, waves of humans, the Nesher Ramla people, migrated from the Middle East to Europe."

The team thinks that early members of the Nesher Ramla Homo group were already present in the Near East some 400,000 years ago. The researchers have noticed resemblances between the new finds and ancient "pre-Neanderthal" groups in Europe.  "This is the first time we could connect the dots between different specimens found in the Levant" said Dr Rachel Sarig, also from Tel Aviv University.

"There are several human fossils from the caves of Qesem, Zuttiyeh and Tabun that date back to that time that we could not attribute to any specific known group of humans. But comparing their shapes to those of the newly uncovered specimen from Nesher Ramla justify their inclusion within the [new human] group."  TO READ MORE, CLICK HERE...

Monday, April 19, 2021

COVID Surge

 FROM BBC NEWS...

Coronavirus figures released by health authorities across South America on Monday show a number of countries grappling with a spike in infections and deaths.  Uruguay and Paraguay registered record numbers of daily deaths, while the total number of Covid cases surpassed the 13-million mark in Brazil.

The surge has been attributed to the spread of the Brazil variant.  The variant is thought to be more than twice as transmissible as the original.

What is the Brazil variant?
Brazilian public health institute Fiocruz says it has detected 92 variants of coronavirus in the country. Experts say that the development of new variants is not surprising: all viruses mutate as they make copies of themselves to spread.

The P.1, or Brazil, variant has become a cause for concern is because it is thought to be much more contagious than the original strain.


P.1 was first detected in travellers to Japan from the city of Manaus, in the Brazilian Amazon, and sequenced in early January.  It has mutations on the spike protein, that part of the virus which attaches to human cells, and it is these mutations which are thought to make it more transmissible.

The variant is thought to have emerged in Amazonas state in November 2020, spreading quickly in the state capital Manaus, where it accounted for 73% of cases by January 2021, according to figures analysed by researchers in Brazil.  Preliminary data suggested it could be up to twice as infectious as the original strain, while more recent research puts that figure even higher, at 2.5 times as transmissible.  READ MORE

BEGINNING TODAY

All postings for this blog will appear on my blog:  JOURNAL FOR DAILY PAGES....  all of the internal page links have been switched.  This bl...