Linkage
A crash course in self-balancing trees, cartoon by UCI grad student Tatiana Bradley
Knitted graph theory and knot theory, by sarah-marie belcastro (G+)
IBM helped the Nazis track down the Jews, so why should the tech industry behave any better this time around? (G+)
Sculpture that overlays texture maps and human forms, by Kohei Nawa
Light-painted photos of dancers that look more like drawings, by Echo Lew
Doron Zeilberger on the Balkanization of mathematics conferences (G+)
How to shrink PDF files, useful for online rec letter sites with small file size limits (G+)
Apple's Swift sorting library falls down when its input is already sorted (G+)
Origami with layered textures, by Goran Konjevod
Trump's moves to completely eliminate climate research and roll back progress on global warming (G+)
Maryna Viazovska wins the Salem Prize for using modular forms to solve sphere packing
Stephen Orlando follows the chronophotography tradition of Marey
Pythagorean tiling, now a Wikipedia good article