22 março 2017

Humans eat meat by cutting up our food, then putting the...

Humans eat meat by cutting up our food, then putting the pieces in our mouths. Turns out, we have been doing this much longer than previously believed. One of our ancestral species, Australopithecus afarensis, was already using stone tools to flay meat off bones 3.4 million years ago. We know because every cut leaves small nicks. Such marked bones near an A. afarensis site in Ethiopia were found in 2009. These little bones, showing cuts and scratches inflicted by sharp objects and dents produced by crushing hammers, pushed back our previous understanding of tool use by 800,000 years!

Of course, that’s if the archaeologists got it right. As another archaeologist pointed out, fresh bones trampled by animals can create marks that mimic stone tool cut marks. Luckily science is pretty advanced these days. Extensive statistical analysis, finished in 2015, concluded that the marks were indeed not caused by animals. Go australopithecus afarensis!

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Reconstruction of the Roman Emperor Caracalla

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Space Station View of Mount Etna Erupting

The Expedition 50 crew aboard the International Space Station had a nighttime view from orbit of Europe's most active volcano, Mount Etna, erupting on March 19, 2017. Astronaut Thomas Pesquet of ESA captured this image, writing, "Mount Etna, in Sicily. The volcano is currently erupting and the molten ava is visible from space, at night!"

from NASA http://ift.tt/2nC1nJ4
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March 22nd 1963: ‘Please Please Me’ releasedOn this day in...

March 22nd 1963: ‘Please Please Me’ released

On this day in 1963, the first album by the Beatles, ‘Please Please Me’, was released in the UK by Parlophone Records. The Beatles formed in Liverpool, and made their musical start by performing concerts in Liverpool’s Cavern Club and playing in Hamburg, Germany. The first singles from their debut album, ‘Love Me Do’ and ‘Please Please Me’ had been very successful, with the latter topping the charts in the United Kingdom. The success of their debut album was followed up with their second UK album ‘With the Beatles’ in November 1963. The Beatles went on to become one of the most famous music groups of their day, and its members - John Lennon, Paul McCartney, George Harrison and Ringo Starr - became international icons. The band’s influence continued long after their break up in 1970 and endures to this day.

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Bola de fogo azul acende o céu sobre a Suécia

Pessoas de várias cidades da Suécia relataram testemunhar o espetáculo às 21h30 na noite nesta última segunda-feira.

O fenômeno, visto até ao norte como Pitea, iluminou o céu noturno de maneira espetacular, produzindo um brilho azul brilhante que foi acompanhado por um súbito estrondo alto.

O culpado, como se viu, era um bólido – um meteoro muito brilhante que explode na atmosfera.

“Isso é algo que acontece algumas vezes por ano”, disse Eric Stempels, do Departamento de Física e Astronomia da Universidade de Uppsala.

“Pode acontecer durante o dia, quando está nublado ou longe de áreas povoadas, mas esses eventos geralmente não recebem muita atenção.”

As imagens de vídeo do evento, que foi capturado na câmera pela rede sueca Allsky Meteor Network, podem ser vistas abaixo.

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VISIT –> http://ift.tt/1eWNk1f for quality...

VISIT –> http://ift.tt/1eWNk1f for quality psychology information and resources.

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