189 articles from MONDAY 11.11.2019

New particle analysis technique paves way for better air pollution monitoring

A new technique for continuously monitoring both the size and optical properties of individual airborne particles could offer a better way to monitor air pollution. It is especially promising for analyzing fine particulate matter measuring less than 2.5 microns (PM2.5), which can reach deep into the lungs and cause health problems.

That Tiny Black Dot on the Sun Today? It Was Mercury, in a Rare Celestial Crossing

(CAPE CANAVERAL, Fla.) — Mini Mercury skipped across the vast, glaring face of the sun Monday in a rare celestial transit. Stargazers used solar-filtered binoculars and telescopes to spot Mercury — a tiny black dot — as it passed directly between Earth and the sun on Monday. The eastern U.S. and Canada got the whole 5 ½-hour show, weather permitting, along with Central...