Posts from ‘January, 2009’

Contrails or vapour trails are visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they might precipitate a cloud of microscopic water droplets. If the air is cold enough, this trail will comprise tiny ice crystals.
The main products of hydrocarbon fuel [...]

Seasonal Turnover relates to the exchange of surface and bottom water in a lake or pond. This annual recycling program happens twice a year. There’s spring turnover and fall turnover and summer stagnation in between. From spring to fall, warmer water goes from the top of the lake to the bottom and cooler water moves [...]

A Large variety of animal life could be found in Alaska. From the polar bear to the otter to the bowhead whale, Alaska is teeming with unique life in the animal kingdom. However, some of the wildlife in this Northern land is in danger. Environmental and human threats are providing for a grave outlook on [...]

The reason for this is that the embodied energy needed to manufacture a modular building is transportable as the embodied energy is locked within the fabric of the building. Hence the energy contained within pre-owned modular buildings can be transported and relocated to another site. In traditional buildings this is mostly lost when they’re no [...]