GeekWire at the Ballpark: Testing smartphone audio streams and Amazon’s cashierless tech

GeekWire at the Ballpark: This week on the GeekWire Podcast, we're on location at T-Mobile Park in Seattle, where we test old-fashioned terrestrial radio against smartphone audio streams for listening to the play-by-play in the stands. We also debate pros and cons of baseball analytics and robot umpires, and experience the highs and lows of Amazon’s latest retail technology at the tech giant’s hometown stadium. Listen here and read more.

Twitter subpoenas Seattle-area tech company: Lawyers for Twitter issued a subpoena this week to Halo Privacy Inc. of Lynnwood, Wash., seeking documents and information in the social media company’s lawsuit against Elon Musk over his attempt to end their $44 billion acquisition agreement.

Seattle connection to moon mission: When NASA’s Space Launch System rocket sends an uncrewed Orion spacecraft beyond the moon and back for the Artemis 1 mission on Monday, the trip will put rocket components built in the Seattle area to their sternest test. But at Aerojet Rocketdyne’s Redmond facility, where hardware for Artemis 1 was built years ago, engineers are already working years ahead.

High school student leads nonprofit: When 16-year-old Subha Vadlamannati isn’t playing the piano or digitally drawing Anime characters, she’s helping refugee and immigrant students learn English using her passion for computational linguistics. Read more.