In 1973, Paul Erdős asked if it was possible to assemble sets of “triples”—three points on a graph—so that they abide by two seemingly incompatible rules. Read more »
Scent is the realest sense. For virtual reality to feel truly immersive, it needs to start stinking it up. Read more »
Plus: A Google Chrome patch licks the DevilsTongue spyware, Android’s kernel gets a tune-up, and Microsoft fixes 84 flaws. Read more »