During a nuclear explosion, what's a common practice to mitigate exposure?

Sheltering in place is a common practice recommended during a nuclear explosion because it provides the best chance of minimizing radiation exposure. This strategy involves remaining indoors in a secure location to reduce the likelihood of contamination from radioactive particles. Buildings offer barriers that can significantly shield individuals from radiation, especially if the structure is made from materials like concrete, brick, or other dense substances.

When indoors, it's advisable to stay away from windows and external walls, as these areas would be more susceptible to fallout. Maintaining ventilation helps prevent the buildup of potentially harmful particles, while sealing entry points can further minimize exposure.

Other methods such as climbing to higher ground or evacuating the area may not be as effective or safe in the immediate aftermath of a nuclear explosion. Higher ground might not guarantee safety from radiation and could expose individuals to fallout that has drifted due to wind patterns. Evacuation may also be impossible or dangerous if fallout or radiation levels are severe, as navigating through contaminated areas poses additional risks. Using a gas mask, while beneficial against certain chemical or biological threats, is less effective in protecting against radiation, which requires different safety measures. Thus, sheltering in place is the preferred method for reducing exposure during such an event.