Popular Mechanics

Popular Mechanics helps the reader master the modern world, presenting trusted information about his home, his car, his technology and the world around him. With tool tests, building projects, car reviews and more, Popular Mechanics shows the American man how to upgrade his life. And the magazine's analysis of the latest developments in technology and engineering keeps him in the know about the science behind the news-from alternative energy to military technology to digital privacy. Each month, nearly 9 million curious minds turn to Popular Mechanics for advice and in-depth reporting. Get Popular Mechanics digital magazine subscription today.

Popular Mechanics

MORE GREAT STUFF LIKE THE STORIES IN THIS ISSUE

GO DEEPER DOWN THE RABBIT HOLE WITH POP MECH PRO

Can’t Stop Thinking About

BATTERIES

A New Human Species

Longevity Escape Velocity

This Secret Military Base

TOMB SURPRISES

D.B. Cooper

A Third Form of Magnetism

A Christian Amulet

This Whiskey Shipwreck

A Gopher Volcano

A New Predator Emerging From the Deep

HOW TO PREP YOUR A/C FOR SUMMER • With the last two years being the hottest on record, in many parts of the world, an air conditioning system isn’t just a luxury; it’s a lifesaver. Taking good care of your A/C is therefore essential. Neglecting upkeep could lead to worsened indoor air quality, higher utility bills, and a shortened life span of your unit. Some repairs are best handled by a professional, but there are several maintenance tasks you can manage yourself. Here’s how to set up and look after your A/C to ensure efficiency, smooth running, and a cool(er) summer.

CHECK YOUR DRAINAGE SYSTEM

MAKE SURE THERE IS NO DEBRIS ON YOUR OUTDOOR UNIT

WHAT IF YOUR A/C ISN’T RUNNING PROPERLY?

HOW DO AIR CONDITIONERS WORK?

OPTIMIZE YOUR A/C SETUP

HIGHLIGHTS FROM A/C HISTORY

ADDITIONAL WAYS TO COOL DOWN A ROOM—WITHOUT BLASTING YOUR A/C

HIS FAMILY WANTED TO DONATE HIS ORGANS. IT SHOULDN’T HAVE BEEN THIS HARD. • Everything has to go right for a lifesaving transplant. Too often, the system makes it impossible.

BUILD THIS DIY WINE RACK • Make it your own by selecting unique wood, altering the dimensions, or using a special finish.

A Small Small Town. A Missing Security Guard. A Brazen Heist. • When $220,000 worth of platinum went missing from a Pennsylvania glass factory, authorities were stumped. Then they saw the security footage.

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