Water: the lifeblood of Earth
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Water is often taken for granted, especially in places where it flows easily from taps or falls regularly from the sky. Yet this clear, tasteless liquid is one of the most vital resources on Earth. Without it, life would not exist. From shaping the surface of our planet to keeping our bodies functioning, water plays a central role in supporting all living things. Despite its importance, many people around the world do not have reliable access to safe water. Understanding the role of water – and how we can protect and manage it – is key to safeguarding our future.
Water covers most of the Earth
Approximately 71% of the Earth’s surface is covered by water. This includes oceans, rivers, lakes, glaciers, and underground aquifers. The vast majority of this water – around 96.5% – is found in the oceans. These salty waters are not suitable for drinking or for most farming or industrial purposes without expensive treatment.
When people talk about the ‘blue planet’, they are referring to the...
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