1. There's a 1 in 3 chance police will never identify your killer if you're murdered in the US.
NPR reports that, "Criminologists estimate that at least 200,000 murders have gone unsolved since the 1960s."
2. There are over 250,000 deaths a year due to medical error.
That's over 684 per day.
3. Over 80 million bacteria can be exchanged in one kiss.
Those who are in a long-term relationship are more likely to have the same types of microbiota present in their mouths.
4. The air you breathe in a train station is 15% human skin.
If you think leaving a train station will save you from inhaling skin, just know that about 80% of the floating specs you see in a sun beam are also skin.
5. Speaking of skin, you'll shed about 40 pounds of it in your lifetime.
And your skin can shed at a rate of 500 million cells a day.
6. There's a jellyfish half the size of your pinkie that can killyou.
They're called Irukandji jellyfish, and they grow to be about a centimeter in body height. Jellyfish taxonomist Lisa Gershwin says that side-effects of their sting include pain that feels like someone is drilling through your back, sweats so bad that sheets have to be wrung out every 15 minutes, difficulty breathing, constant nausea and vomiting for up to 12 hours, and muscle restlessness to name a few.
7. And there's a brain-eating amoeba that lives in lakes and rivers of the southern United States.
The single-celled organism travels up the nose to the brain, where it starts to break down the tissues.
8. Thomas Hargrove, a homicide archivist, estimates that there are over 2,000 serial killers at large right now.
