![NASA image of the earth](/sites/default/files/styles/390x260/public/warming-earth.png?itok=99XxD6me)
Even the 'optimistic' climate change forecast is catastrophic
By Mark Kaufman Humanity is on pace to heat Earth by around 3 degrees Celsius, or 5.4 degrees Fahrenheit, above pre-Industrial Revolution temperatures by the century's end. That level of warming would...