Everyone, everywhere could use a personal air pollution monitor device to try and avoid the worst of the pollution most of us are exposed to. This is a new study from the World Health Organization reported on by Science Daily:

92% of the world’s population exposed to unsafe levels of air pollution

Date:
September 27, 2016
Source:
World Health Organization
Summary:
A new WHO air quality model confirms that 92% of the world’s population lives in places where air quality levels exceed WHO limits. Some 3 million deaths a year are linked to exposure to outdoor air pollution. Indoor air pollution can be just as deadly. In 2012, an estimated 6.5 million deaths (11.6% of all global deaths) were associated with indoor and outdoor air pollution together.

https://www.sciencedaily.com/releases/2016/09/160927144248.htm