Half of flood defences – around 100,000 - are maintained by the Environment Agency and 9% of those are currently below their target condition. Each defence is given a score out of five they must achieve depending on their importance.
In the vacuum of space, the amount of debris—spent rocket stages, splintered satellites, micrometeoroids—numbers in the millions, all zooming about, often at 17,000 mph speeds. They’re also constantly hitting each other in a tsuris of exponential littering. Most of these pieces are tiny, and many are not anywhere near the altitude of the ISS. But the area isn’t completely clean.
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