If nuclear warfare is believed to be somewhat controlled, then climate change is now the greatest threat.
Graciela ChichilniskyWe are still learning how exactly the Earth reacts to increased CO2 and other greenhouse gases. We know it leads to warming seas which are melting the North and the South Poles, rising and starting to swallow entire coastal areas in the US and elsewhere, as the New York Times article documents.
Graciela ChichilniskyWhile denial leads to certainty, it is only the certainty of death. This is true for individuals and also for civilizations.
Graciela Chichilnisky