Hacker News on 4 February 2017

• Blockchain Demo [video]
• Facebook is terrifying
• Using tmux properly
• Appleseed – open-source physically-based rendering engine
• FBI Is Building a Watchlist That Gives Companies Real Time Updates on Employees
• YouTube removes hundreds of the best climate science videos from the Internet
• Interactive command line HTTP inspector written in Go
• Network programming with Go (2012)
• More than one million requests per second in Node.js
• An Even Easier Introduction to CUDA