Plastic waste at a disposal plant in Tokyo.

Proponents of a process called pyrolysis — including oil and gas companies — contend it will keep post-consumer plastics out of landfills and reduce pollution. But critics say that by converting waste to petroleum feedstock, it will only perpetuate a dependence on fossil fuels.

By Judith Lewis Mernit

Oceans

As Ocean Oxygen Levels Dip, Fish Face an Uncertain Future

Global warming not only increases ocean temperatures, it triggers a cascade of effects that are stripping the seas of oxygen. Fish are already moving to new waters in search of oxygen, and scientists are warning of the long-term threat to fish species and marine ecosystems.

By Nicola Jones

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Chilekwa Mumba.

INTERVIEW

This Zambian Took on a U.K. Mining Giant on Pollution and Won

Chilekwa Mumba led a court battle to hold a U.K.-based company responsible for the gross pollution from a copper mine it owns in Zambia. In an interview, he talks about how he and local villagers faced arrest to overcome long odds and finally win a landmark legal victory.

By Jocelyn C. Zuckerman

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