From the tiniest soil bacterium to the mighty whale, every living thing on Earth plays a role so important that losing it could unravel the very world we depend on.
From the tiniest soil bacterium to the mighty whale, every living thing on Earth plays a role so important that losing it could unravel the very world we depend on.
Imagine pulling a single thread from a sweater. At first, nothing seems to change. But pull enough threads and the whole sweater falls apart. That is exactly how life on Earth works. Scientists call this the web of life, or biodiversity. Every plant, animal, fungus, bacterium, and insect is a thread in that web. When any species disappears forever, we call it extinction, and the web becomes a little weaker. Right now, scientists estimate that Earth is losing species up to 1,000 times faster than the natural rate, largely because of human activities like deforestation, pollution, and climate change.
Singapore might be a small island, but it punches far above its weight when it comes to biodiversity. Our little red dot is home to more than 40,000 species of animals and plants, including otters, pangolins, hornbills, and thousands of insects. The Sungei Buloh Wetland Reserve protects migratory birds travelling thousands of kilometres between Siberia and Australia. The Southern Ridges connect patches of forest so animals can move safely. Gardens by the Bay and the Singapore Botanic Gardens, a UNESCO World Heritage Site, protect rare plant species. Even the Kallang River, once heavily polluted, has been cleaned up and now hosts otters, monitor lizards, and over 50 species of fish. When we protect these habitats, we protect the threads that keep our environment healthy.
Why does every living thing matter? Because species depend on each other in surprising ways. Bees and butterflies pollinate the flowers that become the fruits and vegetables we eat. Mangrove trees along our coastlines act as nurseries for fish and as natural walls against floods and storms. Decomposers like worms and fungi break down dead material and return nutrients to the soil so new plants can grow. Even mosquitoes, which we often dislike, are food for bats and birds, and some species help pollinate plants in tropical forests. Remove any one of these players and the whole system shifts in ways that can harm humans too. Scientists call these benefits ecosystem services, and they are worth trillions of dollars to the global economy every single year.
The good news is that every one of us can make a difference, no matter our age. In Singapore, students have planted mangroves at Sungei Buloh, joined the annual BioBlitz to count local species, and adopted storm drains to keep them free of rubbish that harms aquatic life. Simple actions like choosing sustainably sourced food, reducing single-use plastic, turning off lights to reduce carbon emissions, and learning the names of local wildlife all help protect biodiversity. When we understand why every living thing matters, we become better caretakers of the only planet we have. As the great naturalist David Attenborough once said, no one will protect what they don't care about, and no one will care about what they have never experienced. So go outside, explore, and fall in love with the living world around you.
