What do crabs, shrimp, and pine trees have in common? Well not much, except that they all play a roll in the battle to stop an eco-villian known as the bark beetle. Credited with ravaging millions of acres of Western pine trees, the bark beetle has proven difficult to control. But now scientists recently discovered a serum made from crushed shrimp and crab shells that may be cheap and effective. The serum works by increasing a trees’ secretion of sap, which can block beetles from eating into the bark where they lay eggs and spread a blue fungus. And by use of aerial spraying, conservationists believe they could save whole forests from a beetle invasion that is a bit less welcomed than the one by London’s Fab Four in the 1960’s.