A food safety activist’s warning that sewage-based compost given away by San Francisco contains toxic material received an indifferent response Tuesday from utilities officials, who plan to hold a ...

A new study by researchers from Sichuan Agricultural University and international collaborators provides the most comprehensive evidence to date that biochar, a charcoal-like substance made from ...

Starre Vartan is an environmental and science journalist. She holds an MFA degree from Columbia University and Geology and English degrees from Syracuse University. Cold composting is the process by ...

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