The paper entitled "Direct visualizations of air flow in the human upper airway using in-vitro models" was published in SCIENCE CHINA Life sciences recently.

It's a unique pattern that is part bird, part mammal. When the animal exhales, nearly all of the air flows towards the front of the lung and out of the trachea in a net unidirectional flow.

Therefore, for global balloonists, troughs and ridges present the least desirable air flow pattern.

Interactions between the stratospheric ozone chemistry and atmospheric air flow lead to significant changes of airflow patterns from the ground up to the stratosphere. Scientists at the Research ...