When we say “throw it away,” we talk as if the thing disappears. It does not. “Away” is a real place: a landfill, a furnace, a river, or another country that receives our rubbish.

A landfill is storage, not magic. Modern ones are lined so the waste stays in one cell, and some of the gas is captured. The rubbish is still there. Burning waste makes it smaller and can make electricity, but the ash remains, and the smoke has to be controlled.

The sharpest failure is waste that is never collected. It is dumped, burned in the open, or washed into a drain. Plastic that reaches a river can reach the sea. Researchers estimate that about 11 million tonnes of plastic enter the ocean every year.

A plastic bottle shows the problem clearly. The drink is gone in minutes. The plastic is not. Sunlight breaks it into smaller pieces, but those pieces are still plastic. Only about 9% of the world’s plastic waste is truly recycled. Much of the rest is burned, buried, or lost.

Recycling helps. It is not a plan. The plan starts before anything reaches the bin.

Food is the heavy half of the pile — about 44%. In a sealed landfill it rots without air and can produce methane, a strong greenhouse gas. A banana peel in a compost heap returns to the soil. The same peel in a landfill does not.

So the problem is not only that the pile is huge. It is that “away” was never empty, and many things we use for a moment were built to last for decades.