500K views · 10K reactions | Understanding this isn't difficult, you just need to know biology, chemistry, physics, geology and every other science in the existence. | Kurzgesagt | Facebook

There is a hidden planet INSIDE Earth where life defies the rules of biology. At temperatures that could cook you alive, under pressures that would crush you, creatures have hacked the secret to immortality. They’ve survived for millions of years, thriving in total darkness, bathed in radiation. Welcome to the deep biosphere. | Kurzgesagt