The UK had its hottest day on record.
On this day, Cambridge, Cambridgeshire, reached a scorching 38.7 °C (101.7°F).
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Wikileaks published classified information about the war in Afghanistan.
The plastic shirt collar was patented in the US by Walter Hunt.
The first baby was born after being conceived by in vitro fertilization (IVF).
Metallica released their album 'Kill 'Em All.'
Bob Dylan performed his first electric concert at the Newport Folk Festival.