Maria Popva

First Question
It is common for houses in cold climates to be build out of wood, because the cold climate doesn 't weather wood, thus providing more longevity to the house; wood helps in trapping heat so the heat that is emitted from he lights in the houses during winter is captured by wood and stored in it, works as cold insulator, allows building layered walls that helps in installing a layer of cold insulator within the walls

References:
[1] http://home-and-constuctions.blogspot.ca/2010/02/wooden-houses.html
[2]http://en.wikibooks.org/wiki/Technologies_for_Rural_Development/Building_houses#
Housing_for_Cold_Climates
[3]http://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_c
hina/cub_china_lesson02.xml
Colors are a way to understand and recognize the world around us; a colorless world is a world of non existence. The first origins of color are the spectrum colors, the colors of the rainbow which includes the colors produced by the visible light, which include red, orange, yellow, green, blue, violet. There are many more colors in the world around us, these colors are all derived from mixing two or more visible colors.
The process of understanding the colors in the world allows us to understand cultures , behaviors, emotions, and even state of mind, this process is called Color psychology. Color psychology is a science which allows us to unlock secrets of colors and the affects that colors have on us, as well as, allowing us to use colors in ways most suited to human life.
The four main colors in color psychology are red, blue, green, and yellow, these colors are primary colors that relate to the body, mind, emotions, and balance of human beings. Each color holds many secrets and connotations behind it; the color red is one of the most powerful color because it has the longest wavelength, it can affect us
"Being in the centre of the spectrum, it is the color of balance - a more important concept than many people realize" Color effects. The ranges of green as any other color can affect us in negative and positive ways; it can help us feel rested, balanced, and peaceful, but it can also make us feel bored, enervated, and bland. Green can be used in painting bedrooms; because it gives a sense of tranquility and health.
To sum up, color psychology affects our daily life, whether we know it or not; it can be you red bedroom that makes us wake up every day feeling angry and overdosed with emotions, or it can be your blue office that makes you feel most productive when working in it. Understanding the effects of color can help us paint our life in a way that would allow us, in a way, control or evoke the right emotions at the right times, it could also help us control other people 's emotions , behaviors, and attitudes. Color psychology is essential to architecture, "Successful design requires an awareness of how and why colors communicate meaning. The source of these meanings can be quite conspicuous, such as those found in nature " Akrisht, blogger and author of