18 MONTHS TO SAVE THE PLANET7,000,000,000+ LIVES ENDAGERED"Right here, right now is where we draw the line. The world is waking up. And change is coming whether you like it or not." -GRETA THUNBERGEarth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these c...