More than 1,000 fortune seekers on Monday flocked to the village of KwaHlathi in South Africa's KwaZulu-Natal province in search of what they believed to be diamonds after a discovery of unidentified stones in the area.

For more than five years, Gloria Majiga-Kamoto, a 30-year-old Malawian environmental activist, has waged a David v Goliath battle against some of the country's largest plastic manufacturers to bring an end to single-use plastics.