Without ozone, the Earth might get a lot colder

The evolution of Earth's climate contains many components. And new research has shown just how critical the ozone layer is to the surface temperature of the Earth. Without an ozone layer, our planet would be 3.5 Kelvin cooler.

'We abuse plastic, it's so cheap': UN Environment chief

Humanity uses and abuses hundreds of millions of tonnes of plastic a year because "it's so cheap", despite the huge cost of the pollution it creates, the head of the UN Environment Programme told AFP.

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