A video to help you understand social audio. Audio-only social-media venues are all the rage right now. How does it all work and what’s there to listen to? WSJ’s Joanna Stern went inside Clubhouse and Twitter Spaces to talk to the people there to find out. Photo illustration: Kenny Wassus for The Wall Street Journal
Tag Archives: Analysis
Analysis: Rise Of 7-Eleven Convenience Stores
7-Eleven, home of the 64-ounce Double Gulp and the Pina Colada Slurpee, has helped revolutionize the way we shop at convenience stores. In March 2019, the 90-year-old brand launched its first Evolution Store. Featuring fresh food options and specialty alcohol, the new store concept is aimed at a new generation of consumers. And with consumer behavior changing due to Covid-19, the convenience store industry could be on the verge of a profound change.
Defense: ‘Future Of The Aircraft Carrier’ (Video)
Expensive, massive and lethal, the aircraft carrier has been the cornerstone of American security for close to a century, but with advances in missile design, will it remain on top? Aircraft carriers are expensive. The latest carrier in the U.S. Navy, part of what’s called the Ford class, costs $12.8 billion per ship, and that’s before the cost of fixing new technology, aircraft flying off the deck and the cost of operating the carrier in the high seas for months at a time. The U.S. has more active aircraft carriers than every other country in the world combined. The U.S. Navy currently has ten Nimitz-class carriers, one Ford-class carrier and nine amphibious assault ships, which are smaller and focus on helicopters and short takeoff and vertical landing aircraft. A Nimitz-class carrier can carry a mix of F/A-18E/F Super Hornets, E-2D Hawkeye surveillance aircraft and an assortment of other support aircraft and helicopters. The carrier fighter of the future is the F-35C. But to field the new aircraft, most U.S. carriers will need to be upgraded.
Covid-19: ‘Why Variants Are Spreading Faster’
As highly transmissible coronavirus variants sweep across the world, scientists are racing to understand why these new versions of the virus are spreading faster, and what this could mean for vaccine efforts. New research says the key may be the spike protein, which gives the coronavirus its unmistakable shape. Illustration: Nick Collingwood/WSJ
Aviation: The Challenges Ahead For Electric Planes
It’s been a tough 12 months for the airline industry, hit hard by the Covid-19 #pandemic. But there are also ongoing concerns about the environmental impact of air travel. Could electric planes be a way forward? They are already being trialled in Slovenia and fully #electric, commercial flights could be ready to take off in just 10 years’ time. Our colleagues from France 2 report, with FRANCE 24’s James Vasina.
Analysis: Can ‘Restoration Hardware – RH’ Become A Global Luxury Brand?
COVID-19 has dealt a harsh blow to countless retailers, many of which were already struggling. However, RH, formerly Restoration Hardware, is doing rather well. The company’s stock price had cratered in March 2020 and struggled in early April, as forced lockdowns endangered retail. But by December 2020, shares had rebounded and risen more than 110 percent since the beginning of the year. RH is now ambitiously trying to turn it into a global luxury brand providing an array of services.
Space Programs: ‘The Search For Life On Mars’
China, the UAE and the U.S. all have spacecraft visiting Mars in February to study the Red Planet. WSJ explains how out-of-this-world technology is being used by NASA’s Perseverance and China’s Tianwen-1 in the search for evidence of life beyond our planet. Photo: NASA
Electric Vehicles: ‘The EV Charging Problem’ (Video)
A Tesla Supercharger is a 480-volt direct currentfast-charging technology built by American vehicle manufacturer Tesla, Inc. for their all-electric cars. The Supercharger network was introduced on September 24, 2012 with six Supercharger stations.[1] As of December 31, 2020, Tesla operates over 23,277 Superchargers in over 2,564 stations worldwide[2] (an average of 9 chargers per station). There are 1,101 stations in North America, 592 in Europe, and 498 in the Asia/Pacific region.[3] Supercharger stalls have a connector to supply electrical power at maximums of 72 kW, 150 kW or 250 kW.[4]
The original V1 and V2 Tesla supercharging stations charge with up to 150 kW of power distributed between two cars with a maximum of 150[21][22] kW per car, depending on the version.[23][14][24] They take about 20 minutes to charge to 50%, 40 minutes to charge to 80%, and 75 minutes to 100% on the original 85 kWh Model S. The charging stations provide high-power direct-current (DC) charging power directly to the battery, bypassing the internal charging power supply.[25]
In September 2017, Tesla announced the availability of urban Superchargers. The urban Superchargers are more compact than the standard Supercharger stalls, and will be primarily deployed in urban areas such as mall parking lots and garages. Compared to the standard Superchargers, urban Superchargers have a maximum power delivery of 72 kW. Instead of 150 kW distributed between two vehicles at a Supercharger A/B stall pair, each Urban Supercharger stall provides dedicated 72 kW capacity.[26]
A few of the Tesla supercharging stations use solar panels to offset energy use and provide shade.[27] Tesla plans to install additional solar power generation at Superchargers.
Analysis: ‘How Could A Digital Health Passport Work?’ (WSJ Video)
Airports in Paris and Singapore as well as airlines including United and JetBlue are experimenting with apps that verify travelers are Covid-free before boarding. WSJ visits an airport in Rome to see how a digital health passport works. Photo credit: AOKpass
Analysis: ‘Can Air Flights Go Green?’ (Video)
Covid-19 has caused the worst crisis in aviation’s history. Is this the industry’s moment for a green reset—and which technologies offer the best hope?
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