Knowledge Notes

Our oceans are our lifelines

When we look at the Earth from the moon or a place even further out in our universe, the entire planet looks blue. That is because about two-thirds of its surface is covered with water, mostly held in our oceans. But our seas not only define the look of our planet, they are also the […]

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Are beach clean-ups effective?

Every year, hundreds of thousands of people across the globe volunteer to be part of a beach clean-up. A beach clean-up is an activity where volunteers gather on beaches along coastlines worldwide and pick up litter and trash on the beach. The most publicised beach clean-up is International Coastal Cleanup Day, which typically takes place

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