Evidence for man-made global warming hits ‘gold standard’: scientists

Scientists say humanity cannot afford to ignore these clear signals. However Canada’s entrenched neoliberal politicians seem to be tone deaf: massively subsidizing fossil fuel production and refusing to leave fossil fuels in the ground. The NDP and Greens are the only ones listening.

Illustration of earth melting because of global warming.

There’s a 99.9999 percent chance that humans are the cause of global warming, a new study reported Monday. Getty Images

OSLO (Reuters) – Evidence for man-made global warming has reached a “gold standard” level of certainty, adding pressure for cuts in greenhouse gases to limit rising temperatures, scientists said on Monday.

“Humanity cannot afford to ignore such clear signals,” the U.S.-led team wrote in the journal Nature Climate Change of satellite measurements of rising temperatures over the past 40 years.

They said confidence that human activities were raising the heat at the Earth’s surface had reached a “five-sigma” level, a statistical gauge meaning there is only a one-in-a-million chance that the signal would appear if there was no warming.

Such a “gold standard” was applied in 2012, for instance, to confirm the discovery of the Higgs boson subatomic particle, a basic building block of the universe.

“The narrative out there that scientists don’t know the cause of climate change is wrong,” he told Reuters. “We do.”

Mainstream scientists say the burning of fossil fuels is causing more floods, droughts, heat waves and rising sea levels. MORE

 

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