World Scientists’ Warning to Humanity: A Second Notice

  title={World Scientists’ Warning to Humanity: A Second Notice},
  author={William J. Ripple and Christopher Wolf and Thomas M. Newsome and Mauro Galetti and Mohammed Alamgir and Eileen Crist and Mahmoud Ibrahim Mahmoud and William F. Laurance and Alessio Collalti},
Twenty-five years ago, the Union of Concerned Scientists and more than 1700 independent scientists, including the majority of living Nobel laureates in the sciences, penned the 1992 "World Scientists’ Warning to Humanity" (see supplemental file S1). These concerned professionals called on humankind to curtail environmental destruction and cautioned that "a great change in our stewardship of the Earth and the life on it is required, if vast human misery is to be avoided." In their manifesto… Expand

Figures from this paper

The second warning to humanity—Why ethology matters?
More than 15,000 scientists co‐signed the “World Scientists’ Warning to Humanity: A Second Notice” by Ripple and colleagues (2017). This “second warning to humanity” renewed a 25‐year‐old manifestoExpand
Language of Warning: The World Scientists' Efforts to Communicate and the Challenge of Poignancy
It’s one thing to issue a clarion cry (or multiple clarion cries), and yet another thing to be heard. The world scientists’ warnings about the direness of our climate predicament have offeredExpand
A Scientist’s Warning to humanity on human population growth
  • W. Z. Lidicker
  • Political Science, Medicine
  • Global Ecology and Conservation
  • 2020
This essay explores the prospect of adopting a science-based framework for confronting potentially adverse prospects of humanity, and explores a perspective based on relevant ecological and behavioral science. Expand
Sounding the climate alarm—scientists and politics
  • F. Baumann
  • Political Science
  • Conservation Science and Advocacy for a Planet in Peril
  • 2021
Abstract The Catch-22 in U.S. politics is the unattainability of reforms needed for sustainability, and the inadequacy of those that are attainable. This stalemate is not the result of scientificExpand
On tackling the environmental crisis through human rights
There is broad scientific consensus on the anthropogenic roots of the environmental crisis, whether we think about biodiversity decline, climate change, pollution or, in general, about the increasingExpand
The second warning to humanity: contributions and solutions from conservation physiology
Overall, this work provides an overview of how conservation physiology can contribute to addressing the grand socio-environmental challenges of the authors' time. Expand
Speaking truth to power for the Earth
  • D. Dellasala
  • Political Science
  • Conservation Science and Advocacy for a Planet in Peril
  • 2021
Abstract Over the centuries, scientists have endured professional and personal attacks over new discoveries from astronomy to medicines and the natural sciences that at times challenge societal normsExpand
Marine biology on a violated planet: from science to conscience
Humanity’s self-ordained mandate to subdue and dominate nature is part of the cognitive foundation of the modern world — a perspective that remains deeply ingrained in science and technology. MarineExpand
The second warning to humanity and wetlands
Ripple et al. (2017) have issued a “Second Warning to Humanity” on the 25 anniversary of the “World Scientists Warning to Humanity” that was issued by the Union of Concerned Scientists (1992). TheExpand
Scientists’ warning on wildfire — a Canadian perspective
Recently, the World Scientists’ Warning to Humanity: a Second Notice was issued in response to ongoing and largely unabated environmental degradation due to anthropogenic activities. In the warning,Expand


Assessing “Dangerous Climate Change”: Required Reduction of Carbon Emissions to Protect Young People, Future Generations and Nature
Climate impacts of global warming is assessed using ongoing observations and paleoclimate data and simple representations of the global carbon cycle and temperature to define emission reductions needed to stabilize climate and avoid potentially disastrous impacts on today’s young people, future generations, and nature. Expand
Assessing ‘‘dangerous climate change’’: Required reduction of carbon emissions to protect young people, future generations and nature
Assessing ‘‘dangerous climate change’’: Required reduction of carbon emissions to protect young people, future generations and nature /  James Hansen et al. PLoS ONE, vol. 8, n° 12, pp. 1-26.Expand
The interaction of human population, food production, and biodiversity protection
An important approach to sustaining biodiversity and human well-being is through actions that can slow and eventually reverse population growth: investing in universal access to reproductive health services and contraceptive technologies, advancing women’s education, and achieving gender equality. Expand
Climate Change, Deforestation, and the Fate of the Amazon
The forest biome of Amazonia is one of Earth's greatest biological treasures and a major component of the Earth system. This century, it faces the dual threats of deforestation and stress fromExpand
The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator
This report reports on an approach to tackle taxonomic and geographic bias in one such indicator (Living Planet Index) by accounting for the estimated number of species within biogeographical realms, and the relative diversity of species inside them, and estimates a global population decline in vertebrate species between 1970 and 2012. Expand
Catch reconstructions reveal that global marine fisheries catches are higher than reported and declining
A decade-long multinational ‘catch reconstruction’ project covering the Exclusive Economic Zones of the world's maritime countries and the High Seas from 1950 to 2010, and accounting for all fisheries, suggests that catch actually peaked at 130 million tonnes, and has been declining much more strongly since. Expand
Dynamics of global forest area: Results from the FAO Global Forest Resources Assessment 2015
Abstract The area of land covered by forest and trees is an important indicator of environmental condition. This study presents and analyses results from the Global Forest Resources Assessment 2015Expand
Ruminants, climate change and climate policy
Greenhouse gas emissions from ruminant meat production are significant. Reductions in global ruminant numbers could make a substantial contribution to climate change mitigation goals and yieldExpand
Christopher Wolf e Thomas M. Newsome são vinculados ao Global Trophic Cascades Program
    Laurance and 15,364 signatories from 184 countries (see supplemental File S2) Contents: Page Descriptions of variables and trends in figure 1
    • World Scientists' Warning to Humanity: A Second Notice