On a warm summer morning in Ypres, Belgium, 66-year-old Sylvain Cuvelier steps into ... Using pollen, scientists have been able to identify where individual butterflies began their journeys ...

The greedy zebra butterfly's protein-rich diet of pollen is fuelling its remarkably long lifespan. A taste for pollen is rare in the butterfly world - most species rely on sugar-laden nectar or fruit ...