Here is a possible concise summary:
The text is a transcript of a video that explains what to do in case of a nuclear bomb explosion. It describes the effects of the explosion, such as heat, light, pressure, radiation and fallout, and how to protect oneself from them. It also warns about the dangers of staying outside, looking at the mushroom cloud, or being exposed to contaminated dust and water. It advises to have an emergency kit, a battery-powered radio, and a shelter. It emphasizes the importance of avoiding panic and freezing, and moving away from the explosion zone as quickly as possible. It also mentions the long-term consequences of a nuclear attack, such as economic, psychological and sociological collapses, diseases and cancers. It concludes by urging humanity to prevent such bombs from being used or produced ever again.
Some possible facts extracted from the text are:
1. A ten megaton thermonuclear bomb exploded a few kilometers away in the heart of the city.
2. The core of the Sun has a temperature of 15 million degrees kelvins.
3. The mushroom cloud will rise up to 30 kilometers in the next seconds, and another one will reach a height of 77 kilometers, and it will reach a thickness of ten kilometers.
4. To be protected from ninety-nine percent of the radiation scattered from the explosion, you need to take shelter under at least 12 and a half centimeters thick Steel, 40 centimeters thick bricks or sixty centimeters thick soil.
5. Within an hour after the explosion, fifty percent of the radioactive fallout will have decayed and lost its effect.
6. Potassium iodide tablets can bind to the cells in the thyroid gland and prevent radioactive iodine from entering the body.
7. The effects of such a bomb would last for decades, and the cities where the bomb was left would be uninhabitable for years.
8. Many of the new births in the region would have diseases and thousands of people suffered from post-traumatic stress disorder.
9. There would be tens of thousands of cancer cases, just fighting against them would cost tens of billions of dollars.
10. According to international agreements, such a bomb should never be used, but if it is to be used, civilians should be warned in advance.