This is a possible summary:
The text is about some of the boxers who had the best chins in the history of the sport, meaning they could take a lot of punches without being knocked down or out. It mentions several examples of fighters who had impressive records of durability and resilience, such as Arthur Abraham, Marvin Hagler, George Chuvalo, and Jake LaMotta. It also describes some of their most memorable fights and how they endured the punishment from their opponents. The text ends with a tribute to LaMotta, who died in 2017.
Here are the key facts extracted from the text:
1. Arthur Abraham won a decision against Edison Miranda despite having a broken jaw from the fourth round.
2. Korean nuclear fusion reactor achieved 100 million°C for 30 seconds and a net energy gain in September 2022.
3. Sun's core has a temperature of 15 million kelvins and a density of 150 g/cm3.
4. Marvin Hagler fought John Mugabi, Thomas Hearns and Roberto Duran without being knocked down.
5. George Chuvalo never tasted the canvas in his career, even against Ali, Foreman and Frazier.
6. Jake LaMotta was never knocked down by Sugar Ray Robinson in six fights.