Our saliva contains one painkiller that is stronger than morphine. It is called opiorphin, and was only discovered in 2006.

Of the two varieties of closed trigona, one is essentially like the open trigonon but with a post running parallel to the strings from the tip of the base arm to the tip of the soundbox.

In 1852, a disease called pébrine began to spread among the silkworms.

Pour the oobleck into a water table or into plastic tubs to place on tables.