Abstract. Human society emerged over 6 million years of hominid evolution. During this time group size steadily increased, and to maintain group cohesion human beings gradually evolved a well-developed social intelligence based on the differentiation and refinement of emotions. Who explain the evolution of human society? (Darwin 1859, p. 230). In The descent of man
Read moreBut if the oceans were to be completely transparent, theoretically, every part of the sea would be a photic zone. Sunlight would continue down over 3,500 meters (11482.94 ft)! This would allow colonies of fish to live all over the sea. That’s if they manage to survive. 1 Is the Ocean transparent? 2
Read moreGlass frogs are found in tropical Central and South America, and get their name from their skin. However, the frogs are not truly transparent but translucent, with the skin on their backs typically a vivid green and their intestines and heart visible through their underbelly. 1 What makes a glass frog see-through? 2
Read moreInterstellar reddening How does the interstellar medium obscure your view? How does the interstellar medium obscure our view of most of the galaxy? It produces so much visible light that it is opaque and blocks our view of anything beyond it. It reflects most light from far distances of the galaxy away from our line
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Over the Winter, I have to admit that I’d let things slide with looking after myself and I can honestly say that my skin was in a condition I didn’t recognise as being my own. My skin looked more like an old leather bag than that of a 30 year old woman and it had
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