The most detailed look yet at the monarch butterfly’s built-in clock suggests it’s an ancient model. The molecular mechanism that keeps the day-night rhythm in the butterfly’s brain shares features ...

During their winter migration to Mexico, monarch butterflies depend on an internal clock to help them navigate in relation to the sun, scientists have found. During their winter migration to Mexico, ...

Monarch butterflies depend on an internal clock to navigate to their winter grounds in Mexico, researchers have found. Scientists have long known butterflies use the sun and an internal compass to fly ...

The monarch butterfly, whose annual 2,000-mile migration has intrigued scientists for decades, navigates with tools human mariners have used for eons — a clock and a compass. Scientists already knew ...

During their winter migration to Mexico, monarch butterflies depend on an internal clock to help them navigate in relation to the sun, scientists have found. By studying monarchs inside a specially ...

An ancestral circadian clock mechanism is defined in monarch butterflies, in which two proteins function as critical components. The proteins may also function as output molecules that connect the ...

WORCESTER, Mass. — Since its discovery, the annual migration of eastern North American monarch butterfly has captivated the human imagination and spirit. That millions of butterflies annually fly up ...