The change in the sanitary pads was first noticed by maintenance staff at the Centre for Development Studies in India's southern city of Thiruvananthapuram a couple of years back.
Suddenly, the traditional method of burying used pads with lots of lime to decompose them was not working – and the pads were just piling up in disposal pits on the leafy campus designed by eco-friendly architect Laurie Baker in the 1970s.
Professor J Devika, who is leading waste management efforts at the centre, told the Thomson Reuters Foundation:
It took us a while to realise that manufacturers were using increasing amounts of non-biodegradable plastics in the pads... all efforts to dispose of them were suddenly failing.


