The guideline for determining the size you need is the 2/3 rule, meaning you'll want an air purifier with a CADR rating of at least 2/3 of the square footage of your space. For instance ...

On the West Coast, in the shadow of Seattle’s iconic Space Needle, protesters held signs with slogans like “Fight the oligarchy.” Protesters chanted as they took to the streets in Portland ...

On the West Coast, in the shadow of Seattle’s iconic Space Needle, protesters held signs with slogans like “Fight the oligarchy.” Protesters chanted as they took to the streets in Portland, Oregon, ...

CAPE CANAVERAL, Fla. — (AP) — Four space tourists who orbited the north and south poles returned to Earth on Friday, splashing down in the Pacific to end their privately funded polar tour.