Who knew that chalk drawings could be this interesting?

Normally, chalk drawings only cause excitement when they are fairly old (say, thousands of years), but two chalk drawings are causing some excitement at Cambridge University

The two drawings, of penguins, were made by Robert Falcon Scott and Ernest Shackleton in 1904 and 1909, and were drawn as part of public lectures by the two Antarctic explorers.

Quite an interesting find, though it doesn't hold any great scientific value as such.