Mary Ellen Hannibal

Mary Ellen Hannibal is an award-winning environmental journalist and the author of Citizen Scientist: Searching for Heroes and Hope in an Age of Extinction.
black walnut tree

Tree Detectives

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The Northern California black walnut led scientists into a genetic mystery: is this a rare tree, or a common one?

New Paradigms for Stewardship

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In 2005, the tribal elders of the Amah Mutsun Tribal Band came to Tribal Chairman Valentin Lopez and reminded him that California Indians have a responsibility to steward Creation. Lopez agreed with them, but he had a big problem: no … Read more

pepperwood preserve

TBC3: Wrestling Climate Change to the Ground

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It’s not “news” to Bay Nature readers that climate change is in the process of giving a serious thwack to living systems. But what’s less well understood is how plants and animals and the habitats they inhabit are moving—and being altered—in response to changing temperature and precipitation patterns.