In Malawi a packet of sanitary towels can cost a whole day's pay, and girls often miss school because the cotton strips they use instead are inadequate. Charlotte Ashton met a woman in Blantyre who's come up with a solution.
It's a 14-year-old girl's worst nightmare. You're standing in front of your class when giggling erupts from the back and everyone's pointing at your behind. With despair you realise your sanitary pad has leaked and an embarrassing circle of blood has appeared on your dress. I clearly remember the anxious checking of my school skirt as a teenager. You'd pull aside a close friend: "Have I leaked?"

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