Billionaire Elon Musk said in a tweet that his rocket company SpaceX may continue to fund its satellite-based Starlink internet service in Ukraine. Some wondered if he was being sarcastic.

A theory about online candle reviews and COVID cases was put under the microscope, and has taken on new relevance amid concern at the lack of official data heading into another winter.

Over 13 days beginning on Oct. 16, 1962, the U.S. and Soviet Union were at the brink of a nuclear conflict. But since the Cold War ended, some historical assumptions about the crisis have changed.

President Xi Jinping kicked off the twice-a-decade summit with remarks that touched on COVID, Taiwan, economic policy and more. It is widely expected his rule will be extended beyond two terms.