1. There are tiny little skin mites that come out at night to have sex on your face.
2. A ten-second kiss can pass on 80 million bacteria.
3. One billion years from now, the sun's expansion into a red giant will have boiled all the oceans dry and destroyed all life on earth. In 7.5 billion years' time, the sun will have engulfed the Earth itself.
4. If an asteroid between one and 10 kilometers in size hit the Earth, it would cause mass extinctions. There are 15 comets of this size whose orbits cross paths with the Earth's orbit.
5. There are tiny little creatures called threadworms (or pinworms) that infect about 20% of children and crawl out of their buttholes at night.
6. Certain kinds of tumours – known as teratoma – can grow teeth and hair.
7. An average human body has 10 times more bacteria cells than human cells.
8. Regulators allow for certain amounts of something called "insect filth" in the food that we eat. But don't worry, the FDA will step in just as soon as it finds more than 90 insect fragments in a 100 gram sample of chocolate.
9. The Surinam toad stores fertilised eggs in her back. When they're ready to be born, they burst out of her back as fully-formed froglets.
10. A single field slug can, in theory, have 90,000 grandchildren and 27,000,000 great grandchildren – if they were all to survive.
11. If a giant panda has twins, she will almost always leave one to die.
12. Britons have £1.4 trillion in household debt.
13. Humans lose 30,000 to 40,000 dead skin cells every minute, or 50 million a day.
14. It's possible to get a tapeworm infection from your beloved pets.
15. The universe will expand forever, at an ever-increasing rate, and "will slowly cool as it expands until eventually it is unable to sustain any life".
16. The average office keyboard has 400 times more bacteria than the average office toilet.
17. The mathematical odds of finding your "soulmate" are pretty grim. As the webcomic XKCD has calculated, you would only meet your soulmate once every 10,000 lifetimes.
That's enough for today.