Emerald Cave, also known as Emerald Cove, shimmers with luminous green light. Here's the best time to visit Emerald Cave and how to get there.

(AP Photo/Minnesota Department of Natural Resources) How to treat trees for emerald ash borer? Judd said there are treatment options, but only if you beat the beetle to your tree.

Lastly, there's the Final Fantasy 7 Rebirth Emerald Witch card. It can buff allies and enemies along a diamond-shaped pattern, so it's something to watch out for.