Sing me an A! “How Perfect Is Perfect Pitch?” blogs.scientificamerican.com/scicurious-bra…

Interesting read: “A Theory of City Size” – Science magazine – m.sciencemag.org/content/340/61…

The mathematical constant pi is packed with meanings—or it’s meaningless
m.spectrum.ieee.org/at-work/test-a…

Flashmob recreates Rembrandt painting in Breda shopping centre – video guardian.co.uk/world/video/20…

Just gave a popular science talk this evening to 100+ ‘friends of KITP’ in Santa Barbara. Great crowd!