It is Kenya that recently brings in world's toughest plastic bag ban: four years jail or $40,000 fine. Plastic bags take between 500 to 1,000 years to break down and also enter the human food chain through fish and other animals.

In Nairobi’s slaughterhouses, some cows destined for human consumption had 20 bags removed from their stomachs. “If we continue like this, by 2050, we will have more plastic in the ocean than fish,” said Habib El-Habr, an expert on marine litter working with the UN environment program in Kenia.

With the ban of plastic bags, a commodity used in high volumes across the country, Kenya recently joined more than 40 other countries that have banned, partly banned or taxed single use plastic bags, including China, France, Rwanda, and Italy.