Twitter-Musk News Timeline: Musk Summons Engineers as Worries of Twitter Crash Grow

Twitter's new owner and CEO, Elon Musk, has been since he finalized a deal to buy the company for about $44 billion on Oct. 27. After laying off half the staff, he gave remaining employees an ultimatum this week to pledge to work under his new intense culture or get out. Many, it seems, .…