For centuries, tree lovers mighty and humble have planted and nurtured trees—elms, oaks, ginkgoes, magnolias, apples, and spruces (to name but a handful of America’s 600-some species). “I never before knew the full value of trees,” wrote Thomas Jefferson in 1793. “Under them I breakfast, dine, write, read, and receive my company. What would I not give that the trees planted nearest the house at Monticello were full grown.” But trees were often taken for granted in a new nation that seemed to have a limitless supply.
Though quantum mechanics is an incredibly successful theory, nobody knows what it means. Scientists now must confront its philosophical implications.
The rewards price to get a free cup of hot coffee at Starbucks is going up.
From emotional intelligence to problem solving, these management training topics will set team leaders up for success.
For Buddhists, the “Four Noble Truths” offer a path to lasting happiness.
The solution involves the infamous Navier-Stokes equations, which are so difficult, there is a $1-million prize for solving them.