Linkage

UCI is #1 for low-income students (G+)

Applications of convolutions in combinatorics

Is it good to take advantage of free subscriptions to online information services for Wikipedia editors? (Yes. G+)

A Helsinki street paved with Penrose tiles

Colbert on diploma mills

Realizing graphs as polyhedra (talk slides from my talk at the Graph Drawing satellite workshop; G+)

Impact factors are bad and you should feel bad for using them (G+)

Numberphile on the Houdini fold-and-cut trick (G+)

Using the h-index to measure research productivity can lock in and amplify pre-existing gender biases

Elsevier profiteers off open-access requirements, no longer usable by NSERC-funded researchers unless they pay thousands to get their own papers published (G+)

Visualizing the space of simple closed curves in hyperbolic manifolds (G+)