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The Earth's protective ozone layer is not recovering uniformly from the damage caused to it by industry and other human activities. And scientists are not sure why it isn't.
An international research team says the ozone, which protects humans and other species from harmful ultraviolet radiation, is continuing to recover at the poles. But recovery at lower latitudes, where far more people live, is not.
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Scientists from the University of Hull and the British Antarctic Survey have determined that the levels of microplastics are five times higher than previous estimates. The results were published in the journal Science of the Total Environment.