The plants outside your window carry a hidden geography. Many arrived from distant continents. A new global forecast shows that mix is about to shift, in ways few people notice until it takes hold.

A school year’s worth of short, accessible image-driven posts that invite a variety of kinds of writing By The Learning Network To participate, submit your response here by July 17 at 9 a.m. Eastern.

CHATHAM COUNTY, N.C. — The ground is barren in the center. Even the crabgrass struggles to grow. Legend says nothing can thrive on this patch in the woods of Chatham County. It’s been this way for ...