National How many times can I reuse my N95 mask? By EMMA H. TOBIN Associated Press Jan 28, 2022 NEW YORK (AP) — How many times can I reuse my N95 mask? It depends, but you should be able to use N95s and KN95s a few times.
National EXPLAINER: As wildfire smoke spreads, who's at risk? By MATTHEW BROWN Associated Press Jul 22, 2021 BILLINGS, Mont. (AP) — Smoke from wildfires in the western U.S. and Canada is blanketing much of the continent, including thousands of miles a…
World 'Tantalizing' results of 2 experiments defy physics rulebook By SETH BORENSTEIN AP Science Writer Apr 7, 2021 Preliminary results from two experiments suggest something could be wrong with the basic way physicists think the universe works, a prospect t…
World Atom smasher will help reveal 'the beginning' By Alexaner G. Higgins and Seth Borenstein The Associated Press Mar 31, 2010
Lifestyle Physicists bring light particles to a halt Updated Apr 1, 2025 Physicists say they have brought light particles to a screeching halt, then revved them up again so that they could continue their journey at …
