How long do humans have left on Earth? As species go, humanity has had a brief, incredibly transformative run here on Earth. We've mined resources, farmed food, hunted animals, built cities and polluted ecosystems across the globe. There's no denying we've also made tremendous technological breakthroughs -- but could some of those same innovations ultimately become the agents of our collective demise? Join the guys as they interview Stuff You Should Know cohost Josh Clark about the science behind his newest podcast, The End Of The World.