Slack opens for trading and shares surge 50% over reference price, CEO explains why the company chose direct listing over IPO | CNBC VIDEO

Facebook workers break non-disclosure agreements, expose grim working conditions | CNBC VIDEO

How China’s control of rare earth minerals threatens the U.S. | CNBC VIDEO

New in cybersecurity: CrowdStrike CEO George Kurtz responds after company’s IPO surges | CNBC VIDEO