Head games: Try these puzzles from Scientific American

Always in your head? Science reveals why from Introvert, Dear

An ancient discovery in Peru from The Atlantic

Positive people all have one thing in common: They live longer from Elite Daily

Scientists make history by breaking blood-brain barrier to treat woman’s tumor from Good

5 simple ways to be kind from Headspace Daily

How the western diet has derailed our evolution from Nautilus

David Foster Wallace on why you should use a dictionary, how to write a great opener, and the measure of good writing from Brain Pickings