Here’s what you’ll learn when you read this story:Scientists dissecting a Neolithic cow molar may have unlocked the mystery of its role in Stonehenge’s creation. By slicing into the tooth, researchers gained information about where and what the cow ate throughout its life. In a key find, the cow likely spent time near the bluestones found in Wales before Stonehenge. By creating nine horizontal sections of the tooth, the team was able to measure carbon, oxygen, strontium, and lead isotopes, each offering a clue regarding the cow’s diet, environment, and movement. The lead isotopes revealed spikes in late winter and spring, pointing to a lead source older than the lead in the rest of the tooth.