Promenade Technology

Scientists have been dreaming of disease-detecting breathalyzers for years. Has the time for the technology finally come? https://nyti.ms/3wxtybA

The V.S.S. Unity will lift off from New Mexico on Sunday morning as billionaire entrepreneurs race to make spaceflight unexceptional. https://nyti.ms/3htlDYC

The proposed rules would close a gap that let the ride-hailing company Didi go public on Wall Street before assuring Beijing that its data was safe. https://nyti.ms/3k7H7Me

Crypto people say they’re building it. Gamers might already be living in it. The art world is cashing in on it. Web veterans are trying to save it. But what is it? https://nyti.ms/3yKc3WS

The latest announcement was nearly identical to one the same agency issued on Sunday, ordering Didi’s main, consumer-facing app off mobile stores. https://nyti.ms/3e2jBfE

The order is the president’s latest acknowledgment of concerns that the tech giants have obtained outsize market power. https://nyti.ms/3yERdbr

Fidji Simo, the new chief, worked on Facebook’s advertising business and helped develop parts of the company’s mobile advertising. https://nyti.ms/3kbu8cH