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Hello, Dear Colleague,
World
Scientists’ Warning of a Climate Emergency (Condensed
Version) William J. Ripple, Christopher
Wolf, Thomas M. Newsome, xxxx scientist signatories from xxx
countries We
scientists have a moral obligation to clearly warn humanity of
any great existential threat. In this paper, we present a
suite of graphical vital signs of climate change over the last
40 years. Results show greenhouse gas emissions are still
rising, with increasingly damaging effects. With few
exceptions, we are largely failing to address this
predicament. The climate crisis has arrived and is
accelerating faster than many scientists expected. It is more
severe than anticipated, threatening natural ecosystems and
the fate of humanity. We suggest six critical and interrelated
steps that governments and the rest of humanity can take to
lessen the worst effects of climate change, covering 1)
Energy, 2) Short-lived pollutants, 3) Nature, 4) Food, 5)
Economy, and 6) Population. Mitigating and adapting to climate
change entails transformations in the ways we govern, manage,
feed, and fulfill material and energy requirements. We are
encouraged by a recent global surge of concern. Governmental
bodies are making climate emergency declarations. The Pope
issued an encyclical on climate change. Schoolchildren are
striking. Ecocide lawsuits are proceeding in the courts.
Grassroots citizen movements are demanding change. As
scientists, we urge widespread use of our vital signs and
anticipate that graphical indicators will better allow
policymakers and the public to understand the magnitude of
this crisis, track progress, and realign priorities to
alleviate climate change. The good news is that such
transformative change, with social and ecological justice,
promises greater human wellbeing in the long-run than business
as usual. We believe that prospects will be greatest if policy
makers and the rest of humanity promptly respond to our
warning and declaration of a climate emergency, and act to
sustain life on planet Earth, our only home. William J. Ripple email:
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