Seeing blue dots, red Xs, orange circles, and purple bands on trees and wondering what they mean? Here's what we found out ...

In London, a copse of reconstituted trees is welcoming audiences to Ai Weiwei’s exhibition at the Royal Academy, where, eight years ago, David Hockney unveiled his 40ft painting Bigger Trees Near ...

Q: My dad helped me plant a couple of young apple trees in my backyard last weekend and so far, so good. After we finished I said the only thing ...