Not so! Your body acts as a heater and warms up cold air as you breathe it in.
Stick with the fly traps or swatters...you can't choke out these pesky pilots.
Birds and many reptiles evolved a specialized way of breathing—one-way air flow.
Have you ever wondered what's really going on when you choke on what you're eating or drinking?
While we tend to associate olfaction with our noses and brains, other parts of our body also have a "sense of smell."
Lizards don't really breathe and walk at the same time. Does this mean that dinosaurs couldn't either?
Marine mammals don't sleep for a solid 8 hours a night, the way we do.
Have you ever laughed so hard that milk came out your nose?
Through the early 1600s, physicians believed there were two kinds of blood, one made by the liver and one by the heart...
We know that some nasty things are happening to the lungs, but why does the smoke change color?