| Tesla recharges its batteries. Electric-car maker Tesla Motor Inc. on Tuesday unveiled new version of its Model S sedan and Model X sport-utility vehicle with 100 kilowatt-hour batteries, which it says are capable of going up to 315 miles on a single charge, The Journal's John D. Stoll reports. Previously, its largest battery size was 90 kwh. Low gas prices, and clunky performance, have made electric vehicles a tough sell in the U.S. Tesla Chief Executive Elon Musk said the 100 kwh sedan can accelerate from 0 to 60 miles an hour in 2.5 seconds, while the SUV can do it in 2.9 seconds. The sedan costs $134,000 and the SUV is $135,000. A Facebook Live manager hits video-sharing market. Vadium Lavrusik, who oversaw the development of Facebook Inc.'s live-streaming video tool, launched a startup Tuesday offering an app that enables users to share videos with select contacts, rather than their entire social network, Deepa Seetharaman reports in the Wall Street Journal. The new venture, Alively, joins a growing number of companies looking to crack live-streaming, including Twitter Inc.'s Periscope and Musical.ly Inc.'s Live.ly. Facebook Chief Executive Mark Zuckerberg made live video at top priority earlier this year, after internal data showed its popularity among younger users. Tech firms push Nasdaq to a record high. With earnings season winding down, the Nasdaq on Tuesday hit an all-time intraday high of 5275.74, up nearly 0.4%, led by technology companies, Reuters reports. U.S. stocks across the board rose on robust housing market data, bolstering the case for an economy gaining strength. Upbeat earnings, especially among tech firms, have buoyed the benchmark S&P 500 index in recent months. Fed policymakers have hinted at the possibility of an interest rate hike in recent days. Digital gives Best Buy Co. a boost. The electronics chain's second-quarter online sales rose nearly 24% from a year earlier, lifting total sales by less than 1% and beating the company's projection for flat growth, The Wall Street Journal's Paul Ziobro reports. The company said visits are up at its website, as the average size of online orders are growing, a sign that improvements to its e-commerce business are paying off. At the same time, Chief Financial Officer Corie Barry said declines in tablet computers and mobile phones weren't as bad as initially projected. Iridium to replace aging satellites. After delays and other setbacks in recent years, Iridium Communications Inc. plans to replace its entire fleet of 66 1990-vintage satellites, roughly 80% of which are currently operating without in-orbit spares, reports Andy Pasztor in The WSJ. Two of the firm's satellites failed earlier this year. It expects replacements, built by Thales SA of France, to be launched into orbit by SpaceX between mid-September and the beginning of October, aboard 10 next-generation spacecraft. The move is expected to improve the quality of data coming off the satellites, which include technology for surveillance and emergency tracking of airliners. Privacy watchdogs say lax security "aided" Ashley Madison hack. A joint report by Canada's Office of the Privacy Commissioner and the Australian Information Commissioner says the Toronto-based dating site, operated by Avid Life Media, violated privacy laws in both countries by not adequately protecting data that users provided when they signed up, according to the BBC. Last year, hackers accessed data on millions of the site's users. The security failures included system passwords stored on easy-to-access internal servers and in emails and text files passed around within the company, among other issues, the report said. | 
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