World scientist warning to humanity app

1992 document about human carbon footprint

The "World Scientists' Warning to Humanity" was a document written in 1992 by Henry W.

Kendall and signed by about 1,700 leading scientists. Twenty-five years later, in November 2017, 15,364 scientists signed "World Scientists' Warning to Humanity: A Second Notice" written by William J. Ripple and seven co-authors calling for, among other things, human population planning, and drastically diminishing per capita consumption of fossil fuels, meat, and other resources.^[a] The second notice has more scientist cosigners and formal supporters than any other journal article ever published.

First publication

In late 1992, the late Henry W.

Kendall, a former chair of the board of directors of the Union of Concerned Scientists (UCS), wrote the first warning, "World Scientists' Warning to Humanity", which begins: "Human beings and the natural world are on a collision course." A majority of th