In 2009, Minnesota treated Pickerel Lake with fish poison to remove common carp; afterward water clarity rose nearly 600% and plant cover climbed from 4.6% to 90%

For decades, Pickerel Lake in Minnesota struggled with poor water quality, heavy algal growth and extremely low aquatic plant cover. The shallow lake had become dominated by common carp, a bottom-feeding fish that can disturb lake sediments and alter the movement of nutrients through an aquatic ecosystem.But after the invasive fish were removed in 2009, […]

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In 1993, Chile adopted an Indigenous Law that enabled land restitution; by 2023 more than 510,000 acres had been returned to Mapuche communities, but native forest cover had barely changed

In 1993, Chile adopted an Indigenous Law that enabled land restitution In 1993, Chile passed a major Indigenous Law that created a formal process for returning ancestral land to Indigenous communities. Over the following 30 years, more than 510,000 acres were returned to the Mapuche, Chile’s largest Indigenous group. However, a long-term study found that […]

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