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For more than seven decades, Attenborough has stood as humanity's most eloquent witness to the splendour and fragility of life on Earth. Through films, books, and public advocacy, he transformed broadcasting into a living archive of the planet's memory, revealing forests, oceans, deserts, wildlife, and endangered ecosystems with scientific rigour and profound compassion. More than a natural historian, he became a guardian of the living world, preserving for future generations the stories of species, habitats, and environmental change amid an age of accelerating biodiversity loss and climate crisis. His work awakened ecological consciousness across nations, opened environmental knowledge to all, and inspired millions toward conservation and stewardship. As we celebrate his hundredth year, we honour not merely a broadcaster but also one of the greatest chroniclers of Planet Earth and a timeless voice for the protection of life itself.