Video: Rick Groleau
About 6,000 years ago, at the start of the Archaic Age, humans first settled in the islands of the Caribbean. Three to four thousand years later, stone tools gave way to clay pottery and the Ceramic Age began. Another two millennia passed before Europeans sailed across the Atlantic and made first contact.
Those who study and those who live in the region have long wondered: Where did these stone tool-using and clay-crafting populations come from? Were they related to each other? How many people lived in the Caribbean when the Spanish first arrived? How much, if any, ancestry can today s Caribbean populations trace back to these precontact Indigenous groups?
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Electrical impulses may help reduce the complications of arterial hypertension
Electrical impulses applied to a particular branch of the vagus nerve could be used in the future to reduce complications of arterial hypertension. These are the results of a research conducted, on animal models, by the Department of Angiocardioneurology and Translational Medicine of the I.R.C.C.S. Neuromed, in Italy, and published in the scientific journal
Cell Reports.
The research origins from the role that immune system plays in the genesis and development of high blood pressure, with the spleen as a main character: it is there that specific immune cells, T lymphocytes, are activated and then released into the blood, migrating to the organs typically affected by hypertension ( target organs ). On one hand, they contribute to the etiology of the hypertensive condition, on the other they cause the well-known related damages. The T lymphocytes activation process, as already stated by previous observat
December 11, 2020
Pexels
As Christmas and the New Year draw close, people around the world are preparing to clink glasses and toast to a hopefully brighter, happier and post-pandemic future.
In France, Italy and sometimes Britain, the word for “cheers” has Chinese origins. “
Cin-cin!” (pronounced chin-chin) is uttered by Italians when they raise and clink their glasses together in a toast before sipping from a flute of spumante sparkling wine as they look each other directly in the eye.
Being superstitious, Italians believe failing to look a guest or friend in the eye during the act, or with water instead of alcohol, can bring bad luck.
Near Threatened = 7,644
Lower Risk/conservation dependent = 180 (this is an old category that is gradually being phased out of The IUCN Red List)
Least Concern = 66,469
Data Deficient = 17,878
The figures presented above are only for those species that have been assessed for The IUCN Red List to date. Although not all of the world’s species have been assessed, The IUCN Red List provides a useful snapshot of what is happening to species today and highlights the urgent need for conservation action. Relative percentages for threatened species cannot be provided for many taxonomic groups on The IUCN Red List because they have not been comprehensively assessed. For many of these groups, assessment efforts have focused on threatened species; therefore, the percentage of threatened species for these groups would be heavily biased.
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