Hacker News on 24 July 2021

• Self hosting is important
• How the Python import system works
• Electromagnetism is a property of spacetime itself, study finds
• Sci-Hub Twitter account suspended
• A database with 3.8B phone numbers from Clubhouse is up for sale
• Amazon Echo Dot does not wipe personal content after factory reset
• Empty storefronts are killing neighbourhoods
• Archaeologists find ancient Egyptian warship sunk near Alexandria
• K-9 Mail is back
• Schools opened, suicide attempts in girls skyrocketed