Electronics

BUYING GUIDE These are the best air purifiers you can buy in every category, from Levoit Core 600S and BlueAir Blue Pure 411i Max to Dyson Purifier Cool.

REFERENCE Air purifiers can capture airborne pollutants, but do they also help with bad smells?

REFERENCE A device that removes pollutants is an appealing prospect, but how exactly do air purifiers work?

REFERENCE Are air purifiers safe to use around our furry friends?

Buying Guide These are the best electric toothbrushes for kids, from Oral B Kids and Philips Sonicare for Kids to AutoBrush Sonic Pro.

REFERENCE We pit air purifiers against ionizers to get to the bottom of what each appliance really does.

Reference Air purifiers are intended to remove pollutants from the air, but how well do they really work?

Buying Guide These are the best electric toothbrushes you can buy in every category, from Oral-B Genius X and Bitvae R2 to Waterpik Complete Care 9.0.

BUYING GUIDE The best astrophotography cameras require excellent low-light capabilities — check out our favorite models to watch for during Amazon Prime Day.