I don’t always sign a paper, but when I do, I prefer warnings to humanity

25 years ago, the Union of Concerned Scientists and more than 1700 independent scientists penned the 1992 „World Scientists’ Warning to Humanity“. In their manifesto, they showed that humans were on a collision course with the natural world. They expressed concern about ozone depletion, freshwater availability, marine life depletion, ocean dead zones, forest loss, biodiversity destruction, climate change, and continued human population growth. They proclaimed that fundamental changes were urgently needed to avoid the consequences our present course would bring. On the twenty-fifth anniversary of their call, 15000 scientist signed a second warning. With the exception of stabilizing the stratospheric ozone layer, humanity has failed to make sufficient progress in generally solving these foreseen environmental challenges, and alarmingly, most of them are getting far worse.

Jonathan Goldsmith, The most interesting man in the world, Euro RSCG Worldwide
William J. Ripple, BioScience, Volume 67, 01.12.2017, Pages 1026–1028
World Scientists‘ Warning to Humanity, 1992
spiegel.de, brt/dpa, 13.11.2017