This slow-growing plant can reach 3 to 6 feet tall outdoors or 2 feet as a houseplant. Crown of thorns grows best outdoors as a perennial in warm zones 9 through 11. Grow it indoors in other zones ...

Crown-of-thorns starfish populations are again flourishing ... So they tend to feed most on the fast-growing branching coral, which is the acropora, and it's actually quite good to remove that ...

PARIS — Four months after its long-awaited reopening, Notre Dame Cathedral welcomed worshippers and tourists alike on Friday for an emotional Easter ceremony centered on the Crown of Thorns ...