Death facts.
- Within three days of death, the enzymes that once digested your dinner begin to eat you.
- The practice of burying the dead may date back 350,000 years.
- About 100 billion people have died in all of human history.
- When a person dies, his sense of hearing is the last to go.
- A human head remains conscious for around 20 seconds after being decapitated.
- A body decomposes four times faster in water than on land.
- Forensic scientists can tell how long it has been since death by looking at the insect species on the body.
- Dead bodies swell up like balloons after about four days, due to the release of gases and liquids.
- The Turritopsis Dohrnii jellyfish is officially known as the only immortal creature in the world. It lives forever.
- We cry tears of blood: During emotional crying after a loved one's death, the increased blood pressure can cause tiny blood vessels in the eyes to burst, leading to the appearance of "bloody tears."
- Hair and nails don't keep growing: The illusion of hair and nail growth after death stems from the skin receding, making them appear longer.
- Brain waves can persist for hours: While consciousness ceases upon death, some brain wave activity may be detected for up to several hours. However, it doesn't indicate any awareness or functioning.
- Rigour mortis is not permanent: The stiffening of muscles post-mortem (rigour mortis) sets in after 2-4 hours and lasts for 24-48 hours before the body relaxes again due to the breakdown of muscle tissue.
- Death experiences are diverse: While some individuals report vivid near-death experiences (NDEs) with tunnels, lights, or feelings of peace, others have no such experiences, and some even report distressing events.
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