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2. Passive ventilation - Wikipedia

   en.wikipedia.org/wiki/Passive_ventilation

   A roof turbine ventilator, colloquially known as a 'Whirly Bird' is an application of wind driven ventilation. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems .

3. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   Ventilation is the intentional introduction of outdoor air into a space. Ventilation is mainly used to control indoor air quality by diluting and displacing indoor pollutants ; it can also be used to control indoor temperature, humidity, and air motion to benefit thermal comfort , satisfaction with other aspects of the indoor environment, or ...

4. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

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   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

6. Boxer Can’t Wait Until Dad Leaves So She Can Promptly Take ...

   www.aol.com/boxer-t-wait-until-dad-153000362.html

   Her mom helped her out and placed the covers on top of her. She even put Poppy in an adorable little sleep mask. All the better to help the dog get some shut eye!

7. Why top internet sleuths say they won't help find the ... - AOL

   www.aol.com/why-top-internet-sleuths-wont...

   A high-profile violent crime typically sets social media abuzz with tips and theories from amateur internet sleuths, hunting for the alleged perpetrator.