Hacker News on 4 August 2016

• Crystal: Fast as C, Slick as Ruby
• How to listen when you disagree
• Some news from LWN
• Interactive Dynamic Video
• Apple announces bug bounty program
• U.S. Team Wins First Place at International Math Olympiad
• Show HN: 1M rows/s from Postgres to Python
• News Feed FYI: Further Reducing Clickbait in Feed
• Visual Studio Code 1.4
• Humpback whales around the globe are mysteriously rescuing animals from orcas