Linkage for mid-December

Ramsey theory in the dining room

Why the history of maths is also the history of art (G+)

The merger of a bubble and a soap film, from the gallery of fluid motion

Kepler Orrery IV, a video simulation showing the scales and temperatures of the extrasolar planetary systems discovered so far

The Chung–Graham universal graphs for trees (G+)

A video walk through fluffy clouds of red string and suspended keys

Undercover Greenpeace activists buy off corrupt academics in a climate science sting (G+)

An alphabet of heptagons: Seven-sided coins (via MF)

The big mid-1980s drop in women in CS (G+)

Osgood curves, Jordan curves that themselves have nonzero area (G+)

Escher museum displayed fakes without telling the punters (G+)

Graph isomorphism in quasipolynomial time (G+)

WaPo gives its blessing to singular they