How Can Air Kill You That Easily ???

追加: 2026-05-21

[00:00:00]This is why igniting a flame before entering a [music] cave can save your life. And if you thought it was just so you could see in the dark, you'd be totally wrong because the flame can expose [music] something your eyes never could. As you keep it near the top, everything seems normal, but the moment [music] you move it closer to the ground, the flame instantly extinguishes. This is caused by carbon dioxide [music] being denser than oxygen, so it sinks and silently gathers at the bottom. And if there isn't enough oxygen to keep a flame alive, there isn't [music] enough to keep you alive, either.