Let's tackle silent hazard of CO2 pollution in our vehicles, homes

CO2 occurs naturally from human respiration. [iStockphoto]

Imagine being driven in a car along a busy highway, completely unaware of an invisible danger. You begin to feel inexplicably drowsy despite being fully rested, and your concentration slips without apparent reason.

Unknown to you, your driver is experiencing the same troubling symptoms. As a passenger, you might fall asleep, but what happens if your driver does the same? Could the invisible air we breathe silently impact your health and safety?