Over 15,000 scientists issue a terrifying 'second notice' to the human race

25 years ago, 1,700 of the world's leading scientists issued a grim "warning to humanity." Within, they explained that human activities were doing serious, irreversible damage on the planet that, if left unchecked, would eventually make the planet uninhabitable. The scientists then listed all of the ways that the Earth was suffering on account of humanity, from ozone depletion to exploitation of water supplies to the destruction of rain forests. On the 25th anniversary of the appeal, over 15,000...