NASA chief acknowledges more trouble with SLS rocket

The US space agency NASA on Wednesday cast a shadow on the future of its new heavy-lift rocket, the SLS—acknowledging development delays on a project that is already years behind.

Tencent investment in Reddit sparks censorship worry

Reddit confirmed Monday a new funding round that included a $150 million investment by Chinese technology behemoth Tencent, prompting concerns that "the front page of the internet" might wind up censored.

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