11 September 2012. Sergei Yolkin’s World. Crows Aren’t Nasty… They Just Have Good Memories

Crows Aren’t Nasty… They Just Have Good Memories

Sergei Yolkin

2012

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According to a paper published in the journal Proceedings of the National Academy of Sciences, American neuroscientists found that crows use approximately the same nerve chain that humans and other mammals do to remember and recognise those people who previously attacked or fed them.

11 September 2012

Sergei Yolkin

RIA-Novosti

http://eco.ria.ru/ecocartoon/20120911/747747938.html

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24 January 2012. Sergei Yolkin’s World: An Étude in Shades of Ochre

An Étude in Shades of Ochre

Sergei Yolkin

2012

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Neanderthal tribes living in what is now the Netherlands in the late Pleistocene, about 250,000 years ago, were able to turn red iron oxide, hematite, into ochre pigment, which they could use for painting on prepared animal skins, Dutch and Spanish archaeologists reported in a paper published in the Proceedings of the National Academy of Sciences.

24 January 2012

Sergei Yolkin

RIA-Novosti

http://ria.ru/caricature/20120124/547624609.html