Floating wetlands along the Chicago River's Wild Mile.

As cities around the world look to rid their waterways of remaining pollution, researchers are installing artificial islands brimming with grasses and sedges. The islands’ surfaces attract wildlife, while the underwater plant roots absorb contaminants and support aquatic life.

By Susan Cosier

INDIGENOUS LANDS

Native Guardians: Canada’s First Nations Move to Protect Their Lands

Faced with mounting impacts from warming and a push for resource development, Indigenous communities in northern Canada are setting aside vast areas for protection. They are also partnering with scientists on research that can help conserve their lands and their way of life.

By Ed Struzik

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A critically endangered Guam rail. The species was relocated to boost its odds of survival.

Biodiversity

Last Resort: Moving Endangered Species in Order to Save Them

Scientists have long warned that climate change and other threats will require relocating some endangered species outside their historic ranges. Now, U.S. officials are proposing rules that would enable them to use this new — and potentially controversial — conservation tool.

By Zach St. George

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