Fun Fact Friday (#48)

Fun Fact Friday is a meme hosted by Lettora at I’m Booked! If you’d like to join and do your own Fun Fact Friday, just ask! At I’m Booked! Every week we’ll give you five new, fun facts.
 

This week’s five facts:


1. Tears caused by sadness, happiness and onions look different under the microscope.

2. Half of all the world's pigs live in China.

3. The highest recorded body temperature in a human being was a fever of  46.5°C. (115.7°F)

4.  There are more than 10,000 varieties of tomatoes.

5. Spiders eat their own webs to recycle them.