This Caribbean island was once plagued with rats that destroyed the ecosystem. Now, plant biomass has increased 2,000% thanks to environmental group efforts.

• Redonda, an uninhabited Caribbean island, was a critical source of fertilizer in the 19th century.
• When miners stepped foot on the island, they introduced invasive species that destroyed the habitat.
• Environmental groups began restoration efforts in 2016 and have seen remarkable progress.

Redonda, a small, uninhabited Caribbean island that is part of the commonwealth of Antigua and Barbuda, is on the path to recovering its native ecosystem after being destroyed by invasive species nearly a century ago.