10 biggest puzzles of human evolution

‘We are the ape that stood on two feet, lost its fur and crossed the globe – but why? New Scientist explores these and other enduring riddles of our past…’ (New Scientist).

A Random Walk with Pi

“…[A] team of researchers from Australia, Lawrence Berkeley National Laboratory, and Simon Fraser University [did] some elegant visualizations of π. In a recent paper, they used a classic method of visualizing large strings of numbers: the random walk. (Wired)