Hacker News on 15 April 2019

• Notre-Dame cathedral: Firefighters tackle blaze in Paris
• 1060-hour image of the Large Magellanic Cloud captured by amateur astronomers
• How Apple, Google, and other tech companies conspired against their own workers
• Amazon ‘flooded by fake five-star reviews’ – report
• LeBron James school that was considered an experiment is showing promise
• A tale of how Google tried to win against Mozilla
• Ripgrep 11 Released
• Mastodon and Keybase
• Death by PowerPoint: The slide that killed seven people
• Why was it so hard to take a picture of a black hole?