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Today's featured article

Diagram of mental capacities
The mind is responsible for perception, thought, feeling, and action.

The mind is that which thinks, feels, perceives, imagines, remembers, and wills, including both conscious and unconscious processes. Its exact nature is debated, like whether mental phenomena are internal activities of transforming information or dispositions to engage in observable behavior. The mind–body problem is the challenge of explaining the relation between matter and mind. According to physicalism, minds are not independent entities but certain aspects of material objects. The evolutionary history of the mind is tied to the development of brains, but it is controversial at which point minds emerged and which non-human animals possess minds. Similar theoretical challenges concern the possibility of artificial minds powered by computers. The main fields studying the mind include psychology, neuroscience, cognitive science, and the philosophy of mind. Their methods range from empirical observation and neuroimaging to conceptual analysis and thought experiments. (Full article...)

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Mario Vargas Llosa in July 2014
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Galaxea fascicularis

Galaxea fascicularis is a species of colonial stony coral in the family Euphylliidae, commonly known as octopus coral, fluorescence grass coral, or galaxy coral. It is found in the Red Sea, the Gulf of Aden and in large areas of the Indo-Pacific, on coral-reef slopes at depths between between 2 metres (6.6 ft) and 15 metres (49 ft). Small colonies of G. fascicularis often form low domes but as they grow, the colonies become more irregular, massively hummocky or columnar, and may eventually reach 5 metres (16 ft) across. The individual polyps are embedded in circular, tube-shaped corallites less than 1 centimetre (0.39 in) across, made of a limy material extruded by the polyps. Lining the corallites are a large number of ridge-like septa radiating from the centre. The polyps often feed in the daytime, and when their tentacles are extended the basic skeleton of the coral is hidden. The general colour of the coral ranges from green and grey to reddish brown. The tentacles are often a contrasting colour and are usually tipped with white. This G. fascicularis colony was photographed in the Red Sea off the coast of Egypt.

Photograph credit: Diego Delso

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