Christopher Null

The third release of Irrigreen’s “water printing” system is better than ever, but you’ll have to upgrade your whole irrigation infrastructure.

This hose-attached smart sprinkler maps your yard, rotates on command, and measures water use. Despite these clever features, the results are a little uneven.

Now outfitted with AI computer vision, this new pool cleaner can actively search for debris.

iGarden's new pool-cleaning robot pairs sporty design with a long runtime, though there are a few quirks.

Inside Dewar’s cavernous whisky warehouses, man’s best mechanical friend—a Boston Dynamics robot dog with an ethanol sensor for a nose—is on the hunt for leaky barrels.

These new in-the-ear aids look great, but quality hearing support just isn’t there.

This accessory gives your laptop three extra displays—as long as you’re prepared to lug them around.

These ultra-tiny hearing aids push the boundary for high-quality audio in a minuscule prescription package.

A growing collection of pocket-sized gadgets lets you record your meetings and extract value from them. Here are our favorites.

This new prescription hearing aid has a special chip designed to improve hearing in noisy conditions.

These odd-looking hearing aids double as solid earbuds, but comfort is a major issue.