Pulmonary edema occurs when the alveoli fill up with excess fluid seeped out of the blood vessels in the lung instead of air. This can cause problems with the exchange of gas (oxygen and carbon dioxide), resulting in breathing difficulty and poor oxygenation of blood.
Currently buildings are limited to a height of 200 meters and are subject to not contrasting the view of Mount Royal, the city's central green space, with the only exception being antennas and communication towers, that are allowed to reach 223 metres (732 ft) above mean sea level.
The term Skyscraper is generically used to mean a really tall building, relative to other buildings of the time, awe inspiring due to its height. In 2018, a building has to be at least about 70 floors, or 1000 ft tall, or 300 m (if you were to round off to establish a benchmark) to be called a Skyscraper in all its glory. This is mainly due to completion of a large number of skyscrapers in China over the last few years.