Easy do-it-yourself video for keeping noise and unwanted sound from traveling between floors and ceilings by insulating with Roxul Safe 'n Sound insulation. For more videos and information, see: http://www.diywithroxul.com
solar US - solar panel prices falling, $/watt numbers are interesting, need actually ¢/kWh. That helps us compare to solar electricity bills and to other types of power plants. To do a location-based comparison, we use a solar insolation map. .
An Ice Age Every 100,000 Years: Why? See 122,000 Year Simulation Of Ice Sheets Science struggled to explain fully why an ice age occurs every 100,000 years. As researchers now demonstrate based on a computer simulation, not only do variations in insolation play a key role, but also the mutual influence of glaciated continents and climate. During the last ice age northern regions of America, Europe and Asia were covered under thick ice sheets.