![]() tro·pism (from the american heritage dictionary) n. "The turning or bending movement of an organism or a part toward or away from an external stimulus, such as light, heat, or gravity." Tropism (from wikipedia) "A tropism is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the direction of the stimulus (as opposed to nastic movements which are non-directional responses). Viruses and other pathogens also affect what is called "host tropism" or "cell tropism" in which case tropism refers to the way in which different viruses/pathogens have evolved to preferentially target specific host species, or specific cell types within those species. The word tropism comes from the Greek trope ("to turn" or "to change"). Tropisms are usually named for the stimulus involved (for example, a phototropism is a reaction to light) and may be either positive (towards the stimulus) or negative (away from the stimulus). "Tropisms are typically associated with plants (although not necessarily restricted to them). Where an organism is capable of directed physical movement (motility), movement or activity in response to a specific stimulus is more likely to be regarded by behaviorists as a taxis (directional response) or a kinesis (non-directional response). "In
English, the word tropism is used in sometimes derisive way to indicate
an action done without cognitive thought: However, "tropism"
in this sense has a proper, although non-scientific, meaning as an innate
tendency, natural inclination, or propensity to act in a certain manner."
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_TROPISM
about landscape: design, dynamics and related issues |
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*green
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01.28.2008 In this somewhat dated article from the Guardian we find that the green revolution is producing more biofuels like ethanol in order to offset foreign oil consumption and global warming, but at what cost? The increase in acreage used to grow fuel crops is subtracting acreage from food production. Although the increase in commodity prices like corn has had a minimal affect in the world's developed nations, the world's poorest are at a severe disadvantage. The situation is only going to get worse as developed nations shift additional farm commodity surpluses to fuel instead of food, exactly where the profit is. |
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*new
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01.27.2008 Varnelis and Next Nature. Check them out. |
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*maps:
finding our place in the world ![]() image: carved wooden map of greenland shoreline credits: http://www.danstopicals.com/woodmap.htm |
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01.26.2008 I recently checked out the Field Museum's exposition on maps. One of the more intriguing ones is shown here. The exhibit runs until 01.27.2008. |
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*new
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01.26.2008 Strange Maps and The Map Room. Check them out. |
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*bullshit
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01.26.2008 |
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