Be careful what you touch, and what you eat. Some vegetation can snuff out your life as surely as a venomous snake. There are hundreds, if not thousands, of poisonous plants in the world, and some of them are deadly.

Google and the internet are changing the way our brains work, no doubt about it. With the internet at our fingertips, why bother to remember trivial facts when Wikipedia is just a click or two away? In the latest issue of The Atlantic, Nicholas Carr makes a convincing argument about the various ways our obsession with …