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Il latte di asina all’olio extra vergine di oliva per i bambini allergici al latte vaccino
16 Gennaio 2019

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Dai Primati lezioni di economia
14 Gennaio 2019

I cebi dai cornetti, specie separatasi dall’uomo circa 35 milioni...

Treat vitamin D deficiency to prevent deadly lung attacks
11 Gennaio 2019

Vitamin D supplements have been found to reduce the risk...

OBESITÀ: L'IDROSSITIROSOLO (OLIO D'OLIVA) MIGLIORA LE CONDIZIONI DEL FEGATO GRASSO
11 Gennaio 2019

Lo studio del Bambino Gesù pubblicato su Antioxidant and Redox...

Our bodies may cure themselves of diabetes in the future
09 Gennaio 2019

Researchers have found that neighbour-cells can take over functions of...

Intermittent fasting could improve obese women’s health
09 Gennaio 2019

Research carried out at the University of Adelaide shows that...

Sinapsi artificiali per la comunicazione neuronale
09 Gennaio 2019

Realizzata per la prima volta la connessione sinaptica tra neuroni...

Trying to quit smoking? New research suggests higher levels of nicotine may help
03 Gennaio 2019

Allowing smokers to determine their nicotine intake while they are...

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Scienzaonline


In an article published recently in the American Journal of Physical Anthropology, researchers from the Paleophysiology and Ecology Group of the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH) analyzed the influence of body proportions on the cost of locomotion by means of an experimental energetic study with 46 subjects of both sexes, whose results indicate that the walk of Pleistocene hominins was no less efficient energetically than that of current humans. The energy cost of locomotion is a question that has been widely studied and debated within Paleoanthropology because of its important implications. The researchers used the relationship between the width of the hip, the length of the femur and the body mass to model this cost in a large number of extinct hominins. Traditionally, it was thought that the leaner skeletons of modern humans reflected biomechanical advantages which made locomotion a more efficient activity. The slimmer pelvis of our species entails greater difficulty for childbirth, but it reduces the force the abductor muscles of the hip have to exert to maintain the stability of the pelvis while walking.

Pubblicato in Scienceonline

 

 

About 95 million years ago, a river turtle adapted to marine environments and made an extraordinary migration from the ancient continent of Gondwana, which grouped what is now Africa and South America, to Laurasia, the Northern continental mass of which Europe, Asia and North America were part. Its remains, found in the town of Algora in Guadalajara (Spain) and in Portugal, are the evidence of the first known dispersal event of a turtle from Gondwana. The researchers themselves call the turtle 'traveler', but the journey of Algorachelus peregrinus, as they have called it, did not start in Algora (Guadalajara-Spain), where it was recently discovered, but in Africa during the Upper Cretaceous.
 "It is not just any turtle, but, as the name suggests, it gives us the necessary clues to describe how a successful migration occurred about 95 million years ago; this journey would have drastic consequences," explains Adán Pérez -García, researcher in the Evolutionary Biology Group of the UNED, the National University of Distance Education (Spain), to Sinc.
 Millions of years ago, the distribution of the continents was not as we know it now. The rupture of Pangea -the supercontinent formed about 300 million years ago- gave rise to two large continental masses: Gondwana -in which the current Africa and South America, among other regions- joined together and Laurasia - which included North to Europe and North America, among others.

Pubblicato in Scienceonline

Medicina

Il latte di asina all’olio extra vergine di oliva per i bambini allergici al latte vaccino

Il latte di asina all’olio extra vergine di oliva per i bambini allergici al latte vaccino

16 Gennaio 2019

Il particolare mix che nasce da filiera tutta toscana è...

Paleontologia

Dai Primati lezioni di economia

Dai Primati lezioni di economia

14 Gennaio 2019

I cebi dai cornetti, specie separatasi dall’uomo circa 35 milioni di anni fa, sono...

Geografia e Storia

Una sorgente magmatica profonda sotto l’Appennino meridionale

Una sorgente magmatica profonda sotto l’Appennino meridionale

10 Gennaio 2018

I terremoti della sequenza sismica del Sannio-Matese del 2013-2014 rivelano la presenza di magma...

Astronomia e Spazio

Il RIENTRO DELLA STAZIONE SPAZIALE CINESE TIANGONG-1: RISPOSTE ALLE DOMANDE PIU’ FREQUENTI

Il RIENTRO DELLA STAZIONE SPAZIALE CINESE TIANGONG-1: RISPOSTE ALLE DOMANDE PIU’ FREQUENTI

26 Marzo 2018

Tiangong-1 è stata la prima stazione spaziale cinese, lanciata il 29...

Scienze Naturali e Ambiente

Il clima trasforma l'Artico in un 'nuovo Oceano'

Il clima trasforma l'Artico in un 'nuovo Oceano'

28 Novembre 2018

Report WWF in occasione della Conferenza Sustainable Blue Economy di Nairobi...

 

Scienzaonline con sottotitolo Sciencenew  - Periodico
Autorizzazioni del Tribunale di Roma – diffusioni:
telematica quotidiana 229/2006 del 08/06/2006
mensile per mezzo stampa 293/2003 del 07/07/2003
Scienceonline, Autorizzazione del Tribunale di Roma 228/2006 del 29/05/06
Pubblicato a Roma – Via A. De Viti de Marco, 50 – Direttore Responsabile Guido Donati

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