Hacker News on 24 June 2015

• What's Really Warming the World?
• We need to rethink employee compensation
• Mattermost: Open-source, on-premises, Slack alternative
• Samsung disabling Windows Update?
• Hagoromo president explains why he closed down his beloved chalk business
• Columbia becomes the first US university to divest from private prison companies
• Jobstart – Personalized, expert guidance to land your next software job
• Erlang/OTP 18.0 has been released
• Telegram Bot Platform
• A man who was jailed on the fantasy evidence of a single hair