Jupiter and Mars will appear to make ultraclose approaches to the moon on two nights this week. Here's how to get the best ...

People's ability to interpret emotions or focus on performing a task is reduced by short-term exposure to particulate matter (PM) air pollution, potentially making everyday activities, such as the ...

Chile's pristine, dark desert skies, world-renowned for astronomy, are at risk of being outshined by urban and industrial ...

Auroras have long mystified humanity. Now that we know what they are and why they happen, we can better predict how best to ...

The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.

With a nickname like Big Sky country, it's no surprise Montana is the ultimate destination for this year's celestial events, ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

This is Thailand's desperate, unproven attempt at reducing the oppressive air pollution over its capital, which on Thursday reached eight times the World Health Organisation's recommended daily ...

This is Thailand’s desperate, unproven attempt at reducing the oppressive air pollution over its capital, which on Thursday reached eight times the World Health Organization’s recommended daily ...

citing the impacts light pollution has on humans — from cancer to sleeping disorders. Sommer described the night sky as one of North Dakota's greatest assets. "Here in North Dakota, we have ...