More from Chalkdust
How much hair?
Thomas Sperling discusses some furry Fermi problems
Significant figures: Gladys West
Madeleine Hall looks at one of the minds behind GPS
Review of The Element in the Room
Reviewing this week's conundrum prize... science-y stuff staring you in the face!
Roots: Mary Somerville
Mary Somerville fights against social mores to become one of the leading mathematicians of her time.
The mathematics of tea-making
When-to-add-milk confusion and other related matters
Flexagon Templates
Print out and make a flexagon