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At Fete with the Saints, a party many regard as one of the best of Trinidad's carnival, food is eaten with biodegradable wooden cutlery and the drinks are poured into reusable cups.

Both organic compounds are known for eliminating pollution from wastewater, and the Wuhan researchers believe it can be used to manufacture a biodegradable anti-microplastics sponge.

When Rachel's time comes, she wants a natural burial, which means using a biodegradable coffin or shroud in a shallower grave.

The view from a camera attached to a biodegradable latex balloon launched by the startup company Make Sunsets.

The idea is “very exciting” and “quite promising,” says Lan Yin, a materials scientist and engineer at Tsinghua University who works on developing biodegradable electronics but was not involved in the study.