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̽»¨Ö±²¥rise and fall of Earth’s land surface over the last three million years shaped the evolution of birds and mammals, a new study has found, with new species evolving at higher rates where the land has risen most.

New research reveals that biodiversity ‘hotspots’ in the tropics produced new species at faster rates over the last 25 million years, but those in temperate regions are instead full of migrant species that likely sought refuge from shifting and cooling climates.