You can keep earwax from building up on your hearing aids with regular manual cleaning. But step out in the rain, accidentally wear your hearing aids in the shower, work in a humid environment, or build up a sweat, and you might find yourself with a problem on your hands (or in your ears). All…
CR’s tests focus on ease of use, the quality of construction (including design, noise, feel, and durability), ergonomics (how well the machine accommodates different users), exercise range, and user safety. For exercise range, we assess whether a machine is suitable for a variety of fitness levels. Our tests factor in the range of treadmill speeds,…
The team members went through a process of incrementally determining what elements and molecules the bacterial strain could grow on. They already knew it could use oxygen, so they tested other combinations in the lab. When oxygen was absent, RSW1 could process hydrogen gas and elemental sulfur—chemicals it would find spewing from a volcanic vent—and…
What about other benchmarks used by experts? There are no federal limits on the amount of lead that dietary supplements may contain. But the FDA does publish something it calls an “interim reference level”—a guideline for reducing the potential adverse effects of dietary lead exposure—which is 8.8 micrograms per day for women of childbearing age,…
“This is just not the right pathway forward,” Isaacman said. A senior NASA official, speaking on background to Ars, noted that the space agency has experienced hydrogen and helium leaks during both the Artemis I and Artemis II prelaunch preparations, and these problems have led to monthslong delays in launch. “If I recall, the timing…
Skip sprays for kids. Children are more likely to squirm when they’re being sprayed, so the spray could inadvertently go toward their face and be inhaled. CR recommends that parents and caregivers avoid using spray sunscreens on them unless no other product is available. And if you have to use a spray, spray the product…
Farrah was fed up with her vagina. For the past two years, the 29-year-old dancer from Ohio had been dealing with severe pelvic pain and vaginal odor. “It was like 8/10, horrible core pain,” she says. “I couldn’t lie down. I couldn’t even work an office job. It was bad.” When she visited doctors, she…
Plastics that support modern life are inexpensive, strong, and versatile, but are difficult to dispose of and have a serious impact when released into the environment. Polyethylene, in particular, is the most widely produced plastic in the world, with more than 100 million tons distributed annually. Since it can take decades to decompose—and along the…
These lightweight tools (most weigh under 10 pounds) are much more powerful than they used to be. But their cleaning prowess still can’t match an upright or canister (especially on carpet), so they’re better for targeted tasks. They’re good enough that if you live in a small space with mostly hard-surface floors, a top model…
The salesperson hawking Brother printers on Taobao works hard—like, really hard. At any time of the day, even when there’s no audience on the Chinese ecommerce platform, the same woman wearing a white shirt and black skirt is always livestreaming, boasting about the various features of different office printers. She has a phone in one…