🥼 11 Oct 2021: The Guardian. > We’ve Been Lied Too!!! What about net zero? To stay within 1.5C, we must stop emitting carbon dioxide and other greenhouse gases.

Fiona Harvey Environment correspondent
Mon 11 Oct 2021 07.30 EDT
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– From burning fossil fuels, from agriculture and animal husbandry – which create methane – from cutting down trees and from certain industrial processes – almost completely by mid-century. Any residual emissions remaining by then, for instance from processes that cannot be modified, must be offset by increasing the world’s carbon sinks, such as forests, peatlands and wetlands, which act as vast carbon stores. That balance is known as net zero.

Long-term goals are not enough, however. The climate responds to cumulative emissions, and carbon dioxide stays in the atmosphere for about a century after it is released, so we could reach net zero by 2050 but still have emitted so much in the meantime that we exceed the 1.5C threshold irrevocably.

That is why scientists and politicians are calling the 2020s the crucial decade for the climate – if emissions can peak soon and be reduced rapidly, we can keep cumulative emissions from growing too much, and still have a chance of staying within 1.5C.
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