People who are repeatedly exposed to respiratory irritants, like smoking, are most at risk of developing Chronic Obstructive Pulmonary Disease (COPD). However, recent research is ringing an alarm bell ...

“PM2.5 particles are floating particulate matter in the air measuring 2.5 micrometers in diameter or less. PM2.5 is so small it can be absorbed into the bloodstream upon inhalation,” IQair said. “For ...

MANILA, Philippines (Updated 3:54 p.m.) — With several areas in Quezon City experiencing "unhealthy" to "very unhealthy" air quality levels, residents are urged to wear face masks when outdoors ...

Before GPS and satnav, sailors on featureless ocean voyages took bearings from the sun’s risings and settings, star declinations, chronometers recording time differences, sextants, compasses ...

They're defined as being between 1 micrometer and 5 millimeters long. Today, they seem to be found virtually everywhere: in clouds , the air we breathe, food , drinking water , and human blood and ...

This year is full of watch brands celebrating all kinds of anniversaries, but if there’s one with a milestone anniversary, it is Breguet. The house celebrates its 250th anniversary this year.

The research team found that while speaking or coughing, droplet size ranged from 2 to 60 micrometers. During normal breathing, they averaged between 2 and 8 micrometers. As expected, coughing ...

Since at least 2016, a rumor has circulated online that "a speck of dust is halfway between the size of" an atom and Earth. However, Wendy Taylor, a particle physicist and professor of physics ...