PARIS (AFP) – The failure to halt climate change, the destruction of nature and other intertwined global crises poses an existential risk to humanity, ten Nobel laureates said Thursday (April 29) following the first-ever Nobel Prize Summit.
Only profound changes in the way society produces, distributes and consumes almost everything – starting with energy – can forestall potentially catastrophic changes, they said in a joint statement, also signed by 20 other top thinkers.
“We need to reinvent our relationship with planet Earth,” the statement said. “Without transformational action this decade, humanity is taking colossal risks with our common future.”
The risks of pandemics, they noted, are now greater due to destruction of natural habitats, highly networked societies, and the spread of fake news on social networks.
The Nobel winners said societies must repair and restore the “global commons” that have allowed our species to flourish – the climate, ice, land, ocean, freshwater, forests, soils, and rich diversity of life that regulate the state of the planet.
“There is now an existential need to build economies and societies that support Earth system harmony rather than disrupt it,” they warned.
“The next decade is crucial: global greenhouse gas emissions need to be cut by half and destruction of nature halted and reversed.”
The amount of CO2 humanity can emit and still cap global warming at 1.5 deg C – our “carbon budget” – will be exhausted before 2030, scientists have calculated.
Earth’s average global temperature has already gone up 1.2 deg C compared to preindustrial levels.
At the same time, energy needs are increasing: every week until 2050 Earth’s urban population will increase by about 1.3 million.
The Nobel signatories included economists Dr Joseph Stiglitz of Columbia University and Dr Oliver Hart from Harvard, biophysicists William Moerner from Stanford and Dr Jacques Dubochet of Lausanne University, and astrophysicist Brian Schmidt of the Australian National University.
‘Last generation that can act’
There is no Nobel Prize for environmental or Earth science.
“What we are doing amounts to an uncontrolled experiment on Earth’s life-support system,”