Linkage for April Fools

(No actual April Fools jokes among these, sorry.)

• Superhydrophobic fountain uses surface coatings to control the flow of water

• Interview with Robert Lang about what it feels like to fold origami (G+)

• How the constraint of having a unique solution can be used to help solve puzzles

• Desargues' concertina — Greg Egan animates unit-distance drawings of one of my favorite partial cubes (G+)

• Missing faces of women scientists on Wikipedia

• Escaping from two lions in a bounded polygonal stadium (G+)

• 3d-printed desserts (or really dessert molds)

• The Dutch get a bad deal on open access from Elsevier (more)

• New developments in mathematical crowd modeling

• Periodic tiling by regular polygons with no two perpendicular periodicity vectors

• The improbable life of Paul Erdős

• Allegedly-predatory publisher OMICS gets in trouble with SCOPUS

• AP stylebook takes baby steps towards accepting singular they

• Some gems from the Royal Institution’s book and paper archive, including an origami nun by Michael Faraday

• Geometric proof of a neusis trisection by a carpenter's right angle