Across the planet, the actions of humans are creating novel ecosystems which, according to the BBC, have been dubbed ‘freakosystems’ by the daughter of a professor of ecology. ‘Freakosystems’ are places where unfamiliar species mix with native species in unexpected ways. Research into the Hawaiian island Oahu’s lush landscape demonstrates how the actions of humans have radically changed the natural world. What do these emerging ecosystems tell us about both the resilience and fragility of life on Earth? Corey Tarwater, an ecologist at the University of Wyoming who has been researching Oahu's ecosystems for more than a decade, joins USA TODAY’s The Excerpt to discuss her findings.

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