Yes there have been many cycles of global climate fluctuation. That is not what’s happening.
Climate change deniers often say, "The Earth has always been warming and cooling, this isn't any different!" Well, this new era of global temperature rise is different.
The video above will lead you through the last seven cycles of warming and cooling across the planet, and it is indeed natural for Earth to oscillate between ice ages and warmer periods in which plants and animals (human and quadruped alive) thrive. But ever since the Industrial Revolution something extra bad has been going on, and both carbon dioxide and atmospheric temperatures have risen together at historically (and we do mean historically) staggering rate.
You know that part in the disaster movie where the seismograph freaks out right before the the whole world is about to get razed by a catastrophic “act of God” type event? Yeah. It’s a lot like that.
Data Source: http://climate.nasa.gov/vital-signs/carbon-dioxide/
Written and Produced by Gabriel Reilich
Graphics by Jake Infusino
Original Music by Kid Infamous (https://soundcloud.com/infamousrap)