Compare Our Top 6 Shower Chlorine Filters Honorable Mention Shower Filters Photograph: Matthew Korfhage Filterbaby Diamond Series Shower Filter for $113: This inline filter was able to reduce total chlorine levels to undetectable amounts, one of few filters on the market able to do so—and the fact that it’s an inline filter means you’ll be…
With the marshals under attack, Kennedy deployed first the Mississippi National Guard and then thousands of federal troops as well. (That military operation, codenamed RAPID ROAD, was actually the first and only time during the Cold War that the military activated and used plans it had developed to quell civil disturbances in the wake of…
If your home isn’t equipped for central air conditioning, mini-splits may be a smart alternative, particularly if you don’t want to install and remove clunky window units each season. Mini-splits, also known as ductless air conditioners, can cool large spaces quickly and quietly. Mini-splits are a type of heat pump. They cool your home by…
Merino wool is a super fiber. The best merino wool clothing somehow manages to be comfortable in 95-degree heat, and merino base layers keep you warm well below freezing. Unlike synthetic fibers derived from petroleum, merino wool is natural and renewable. Merino wool’s versatility means there’s a bewildering array of blends and options to choose…
To develop our in-depth toilet ratings, Consumer Reports’ engineers put the fixtures through a battery of tests involving waste removal, bowl cleaning, and drain-line clogs. We also measure how loud a toilet’s flushes are using a decibel meter. Based on performance in these tests, we give each toilet an Overall Score. To test solid-waste removal,…
VistaPrint specializes in custom physical and digital marketing products for small businesses, like brochures and promotional products, along with personal products like invitations, t-shirts, business cards, or even posters to meet any print and online personalization needs you may have. Fortunately, you don’t have to pay an arm and a leg to shop for these…
The company pretty much invented the hardware superstore when it began in 1978, just by being so big. They inflated the neighborhood tool shop into a whole city of lumber, hammers, caulk, power saws, and big rolls of wire. I would know I’m in a Home Depot blindfolded, because of a distinct quality to the…
Elon Musk had a question: “Does anybody have any experience with first principles analysis?” He was speaking to a room full of kids, many of whom knew Musk as the CEO of companies that made rockets and cool-looking cars—and as the founder of Ad Astra, the microschool they attended in his Bel Air mansion, per…
The original version of this story appeared in Quanta Magazine. Hard problems are usually not a welcome sight. But cryptographers love them. That’s because certain hard math problems underpin the security of modern encryption. Any clever trick for solving them will doom most forms of cryptography. Several years ago, researchers found a radically new approach…
In theory, this is where you’d want to use one of those sticky-backed lint rollers that operate very much like a fat spool of masking tape, with precut segments. Remove its reusable cover, roll over the surface of whatever you’re trying to de-lint, remove that spent sheet, then continue. However, there are other, reusable designs…