Listener Graeme asked us why rocks are hard. We explore the simple and hard explanations and then tackle the science of the perfect Martini in this week’s show!

Why are Rocks Hard

• Whinstone
• Mohs Scale
• A.A. Griffith
• Griffith’s Criterion
• de Havilland Comet
• No Highway (Nevil Shute)
• Rocks Rock Harder (YouTube)

Fun Paper Friday

Trevithick, C. C., et al. “Shaken, not stirred: bioanalytical study of the antioxidant activities of martinis.” BMJ 319.7225 (1999): 1600–1602.

Contact us:

Show - www.dontpanicgeocast.com - SWUNG Slack - @dontpanicgeo - [email protected]

John Leeman - www.johnrleeman.com - @geo_leeman

Shannon Dulin - @ShannonDulin