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Now that the virus has spread to humans, however, scientists are racing to identify all the other ways that people can—and cannot—catch it. The new virus, officially known as SARS-CoV-2, is a member of the coronavirus family, a group that includes the viruses that caused deadly outbreaks of SARS and Middle East Respiratory Syndrome (MERS), as well as far less dangerous viruses that cause the common cold. These closely related viruses—and some preliminary studies of people with COVID-19—can give us some clues about how the new coronavirus might be transmitted....

CAPTCHAs are one of the most annoying parts of the modern internet. Want to buy a concert ticket? Click on all the bridges. Logging into your email account? Time to spot the motorbike. It’s slow, annoying, and easy to get wrong. Do you click on every square that has a tiny bit of pedestrian crossing in it, or just the ones that it’s mostly in? And it’s even worse for people who rely on tools like screen readers to access the internet....

And, yet, it would not be right or fair to say that the Series 8 fails to make large evolutionary strides. The Apple Watch Series 8 shows its true colors at the most important times, before birth and death. First, a new pair of temperature sensors allows the Series 8 to chart estimated ovulation cycles, helping people attempting to get pregnant. Second, a new motion sensor, in conjunction with existing components, enables the ability to detect car crashes and automatically call 911 and your emergency contacts....

Bigger and tougher Apple Watch Ultra is big. While the difference between the 45mm chassis of the Watch Series 8 and the 49mm Watch Ultra may not sound substantial, it should feel positively huge to standard Apple Watch users. Keep in mind: Apple expanded the case size by 1mm with the Watch Series 7, and that made a very noticeable difference. It’ll also have a much thicker chassis to incorporate new components, including a larger, louder speaker and a three-microphone array to improve voice clarity when making calls on the watch in less-than-ideal conditions....

Sometimes, analog is still the way to go. A flash drive can come in handy when you least expect it, so having one in tow is a smart move. The 4-in-1 Smart Flash Drive happens to be on sale, and for a limited time, you can get it for over 20 percent off. Compatible with iOS and Android devices and Mac and Windows computers, this memory card reader lets you transfer photos, videos, files, and other data from your mobile devices to your Mac or PC....

Some of the ways that bacteria become resistant to antibiotics is through changes in the bacteria’s genome. For example, bacteria can pump the antibiotics out, or they can break the antibiotics down. They can also stop growing and divide, which makes them difficult to spot for the immune system. However, our research has focused on another little known method that bacteria use to become antibiotic resistant. We have directly shown that bacteria can “change shape” in the human body to avoid being targeted by antibiotics—a process that requires no genetic tweaks for the bacteria to continue growing....

Best hub: Echo Show 10Best smart doorbell: Ring Video Doorbell 4 Best connected lighting: Lifx A19 bulbBest floodlight camera: Ring Floodlight Cam Wired ProBest smart thermostat: ecobee SmartThermostat Getting started with Alexa’s smart home skills Alexa is a learning computer The best Alexa smart home, however, involves some planning. Skills and third-party platforms like IFTTT (short for “if this, then that) can kludge different devices into the mix. But, you’ll have a much better experience if you start with products that work together right out of the box....

Best water-resistant backpack: The North Face Women’s Vault BackpackBest backpack for athletes: Nike Club Team Swoosh BackpackBest travel backpack: Himawari Travel School Backpack Best durable backpack: Jansport Big Campus BackpackBest stylish backpack: Kenneth Cole Reaction Manhattan Slim Backpack Factors to consider when choosing the best backpacks for college The best backpack to get you through all four years of school needs a variety of features to ensure it checks off all the boxes of functionality, durability, and style....

But, if you’re reading this and thinking “not my problem, no carpets in my home,” bear in mind that the best carpet cleaner will also tackle stains on upholstery and on car interiors—so if you’ve got fabric, and you’ve got stains, keep reading. Best commercial: Rug Doctor Mighty Pro Commercial Carpet CleanerBest for pets: Bissell ProHeat Lift Off Pet Carpet CleanerBest portable: Bissell Spot Clean Professional Portable Carpet CleanerBest cordless: Bissell Pet Stain Eraser Cordless Portable Carpet CleanerBest budget: Hoover Spotless Portable Carpet & Upholstery Spot Cleaner...

Single Origin or Blend: If you’re a black-coffee drinker, single origin beans are best. These coffee beans come from one location, so drinking it without milk allows you to taste the subtle and unique notes more easily. For those who prefer a splash of milk or creamer in their coffee, a blend from multiple locations often offers a more complex and balanced taste.Origin Choices: The climate where coffee is grown impacts its flavor—so take a peek at the package before you decide what your preference is....

Best overall: Kong Goodie Bone Dog ToyBest for puppies: Smart Pet Love Snuggle Puppy Behavioral Aid Dog ToyBest rope toy: Feeko Dog Rope ToysBest dog Frisbee: Tuffy No Stuff Ultimate Ring BoneBest with treats: Outward Hound Fun FeederBest interactive: Wobble Wag Giggle BallBest budget: Nylabone Dental Chew Bone How we chose the best dog toys As avid pooch people, we know from experience how to differentiate between a high-quality dog toy and one that disintegrates in one chomp....

Best optical sensor: Razer Basilisk v2Best adjustable-weight: Corsair NightswordBest for sensitivity: Logitech G502 LightspeedBest with customizable buttons: Razer Naga TrinityBest wireless: Corsair Dark Core RGB ProBest budget: Razer DeathAdder Essential Things to consider when shopping for the best gaming mouse Gaming mice are designed with functionality far above any run-of-the-mill computer mouse options, which means you have more to think about before making a purchase. The overall shape or design of the mouse, its DPI, sensor type, mappable buttons, and whether or not you want a wired mouse are all crucial factors to consider....

Best single-monitor arm: Fully Jarvis Single Monitor ArmBest dual-monitor arm: Workstream by Monoprice Dual Monitor Adjustable Gas-Spring Desk MountBest triple-monitor arm: Mount Pro Triple Monitor Desk MountBest stacking dual-monitor arm: Ergotron LX Dual Stacking ArmBest budget monitor arm: Monoprice 3-way Adjustable Tilting Monitor Desk BracketBest ultrawide monitor arm: Ergotron HX Desk Monitor Arm with HD Pivot How we picked the best monitor arms I’ve been working as a tech critic for almost 10 years and have tested monitor arms for The Tech Report, in addition to tinkering with them on my own time....

Best overall: Moon by SimaudioBest entry-level: iFi Audio Zen Phono PreampBest features: Rega – Fono Mini A2DBest quality: McIntosh MP100Best budget: ART DJPREII Phono Preamplifier How we selected the best phono preamps As a lifelong musician and audio enthusiast, I own and have owned a revolving panoply of audio equipment. For this article, I researched phono preamps at all price points, surveying specs, user impressions, peer recommendations, and critical evaluations. I examined numerous models of preamps from many manufacturers, using my own knowledge of audio gear and my experience as a tech reviewer to compare and contrast these devices, sifting them into multiple categories and ranking them based on a few criteria....

Rather than overloading your cellular data plan or hoping that if you wander around long enough you’ll stumble onto a strong, free WiFi signal, you can actually bring your WiFi along with you. Portable WiFi—also called mobile WiFi or mobile routers—is exactly what it sounds like: small, easily transportable devices that act just like your WiFi router at home. Instead of being attached to a phone cable, however, they operate with a SIM card, which allows the phone to connect to your phone or cable provider just like a hardwired modem would at home....

Read up full list of Prime Day deals here When is Prime Day 2021? When does Prime Day end? The best Prime Day sales on home entertainment Fire TV Stick 4K with Alexa Voice Remote—$25 (was $50)Razer Mobile Game Controller/Gamepad for iPhone—$66.50 (was $100)Samsung 82-inch 4K UHD TV—$1,198 (was $1,500) Best tablet deal: Fire HD 10 Tablet — $120 (was $190) Enjoy vivid images with the Fire HD 10 tablet’s 1080p display and more than 2 million pixels....

Best corded: Greenworks 25142 10A 16-inch Corded MowerBest cordless: WORX WG779 40V 4.0Ah 14-inch Lawn MowerBest gas-powered: Craftsman M105 21-inch Gas-powered Push Lawn MowerBest self-propelled: PowerSmart 21-inch Self-Propelled Lawn MowerBest push-reel: American Lawn Mower Company 1204-14 Push-Reel Lawn Mower Best push mowers: Our picks Best corded: Greenworks 25142 10A 16-inch Corded Mower The Greenworks Corded Mower tops the list as one of the best push mowers because it’s lightweight, yet strong enough to handle overgrown lawns....

These smaller versions of a traditional upright vacuum weigh a fraction of their full-size counterparts. They’re a popular option for the second story of a two-story home, as well as folks with low strength or mobility. Plus, they’re a great tool for quick clean-ups or in-between cleanings with a larger, more powerful machine. Many stick vacuums include features like one-handed dustbin emptying, conversion to a hand vacuum or stair vacuum, or cordless operation....

Best travel wallet: Pacsafe RFIDsafe V150 RFID-Blocking Compact OrganizerBest for long flights: Sony WH-1000XM5 Wireless Noise-Canceling Over-Ear Headphones Best neck pillow: Trtl PillowBest power bank: Anker PowerCore 26800 Portable Charger, 26800mAhBest travel adapter: Epicka All-in-One Worldwide Wall ChargerBest travel accessory (for anywhere): CamelBak Podium Chill Insulated Water Bottle 21 oz.Best travel organizer: Osprey Ultralight Zip Travel OrganizerBest travel suitcase: Osprey Sojourn 45L 22”Best day bag: Patagonia Ultralight Black Hole Tote Pack 27L...

Climate scientists from the independent research group Resources for the Future (RFF) recently came out with an analysis forecasting how much health would improve in the coming years if the US met their lofty 2030 climate goals. The goals, outlined by President Biden, would reduce greenhouse gas emissions by around 50-52 percent of 2005 levels by 2030. The RFF scientists specifically dove into the impacts of secondary particulate matter emissions from fossil fuels and how they impact health and death rates across the US....