On: Japanese ninja history student gets top marks for ...

[GnarfGnarf]

"The words appeared when her professor heated the paper over his gas stove."

Heating super-thin paper over the stove? Wasn't the student taking a big chance her homework would go up in flames?

[kaybe → GnarfGnarf]

It's not that hard (after a low number of tries). You can try yourself, write something with milk and hold it over a candle after drying.