Facebook has invested thirteenbll dollars in teams and technology to enhance safety over the last five years. In the past few months, they've taken down one point seven billion fake accounts. Learn more about their ongoing work at about dot f b dot com.
A tennis star accused a former top Chinese official of sexual assault. Then she vanished. Now her case is changing sports in China.
Today's show was produced by Will Reid with help from Haleema Shah, edited by Matt Collette, engineered by Paul Mounsey, fact-checked by Laura Bullard and hosted by Sean Rameswaram.
Transcript at vox.com/todayexplained
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