Buying guides

The best image-stabilized binoculars provide a clear and steady view.

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.

BUYING GUIDE These are the best air purifiers for allergies you can buy in every category, from Levoit Core 600S and Molekule Air Pro to RabbitAir A3.

Buying guide We have tried and tested dozens of air purifiers over the years, measuring their accuracy and speed in removing airborne pollutants — here's everything we found.

The best smart telescopes offer a supremely easy way of viewing the night sky.

Buying Guide These are the best fitness trackers you can buy in every category, from Amazfit Balance and Garmin Fenix 8 to TicWatch Atlas

Buying Guide These are the best Garmin watches you can buy in every category, from Fenix 8 and Forerunner 965 to Venu 3.

Encourage children to love science by showing them the world in miniature with some of the best microscopes for kids.

Discover a microscopic world with one of the best microscopes for students and young scientists, without emptying your wallet.

The best binoculars for kids should be lightweight, compact, and easy to handle — explore top picks before Amazon Prime Day arrives next week.