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California’s population of monarch butterflies declined 86 percent in 2018 compared to the previous year, according to the Xerces Society for Invertebrate Conservation, a nonprofit group that conducts an annual survey of the species in the western United States. Overall, the state’s monarch population has declined 97 percent since the 1980s.

Researcher conducts first-ever global-scale evaluation of the role of soil minerals in carbon storage.

A new Tel Aviv University study describes a process to make bioplastic polymers that don't require land or fresh water — resources that are scarce in much of the world. The polymer is derived from microorganisms that feed on seaweed. It is biodegradable, produces zero toxic waste and recycles into organic waste.

Spring snowpack a bigger predictor of lake warming than air temperature.

Natural disasters caused $160 billion in economic damage worldwide in 2018, dominated by costly wildfires in California and tropical storms in the United States and Asia, according to a new report from the reinsurance giant Munich Re. California’s Camp and Woolsey fires alone caused losses of $21.7 billion, $16.5 billion of which was insured.