All-conquering teen eyes final step on adventurous quest

North Pole last barrier in university student's bid for place in the record books

Japanese teenager Marin Minamiya has already conquered Qomolangma, known as Mount Everest in the West, and the highest peaks on six other continents, plus a journey to the South Pole.

Now the 19-year-old university student has the North Pole in her sights as she tries to become the youngest person to ascend the seven peaks and venture to opposite ends of the Earth.