Blizzards • 2013 • episode "S1E8" • Secrets of the Earth

58:47

Something weird seems to be happening to our weather - it appears to be getting more extreme. In the past few years we have shivered through two record-breaking cold winters and parts of the country have experienced intense droughts and torrential floods. It is a pattern that appears to be playing out across the globe. Hurricane chasers are recording bigger storms and in Texas, record-breaking rain has been followed by record-breaking drought. Horizon follows the scientists who are trying to understand what's been happening to our weather and investigates if these extremes are a taste of what is to come.

Environment

54:05

Four and a half billion years ago, the young Earth was a hellish place—a seething chaos of meteorite impacts, volcanoes belching noxious gases, and lightning flashing through a thin, torrid atmosphere. Then, in a process that has puzzled scientists for decades, life emerged. But how? NOVA joins mineralogist Robert Hazen as he journeys around the globe. From an ancient Moroccan market to the Australian Outback, he advances a startling and counterintuitive idea—that the rocks beneath our feet were not only essential to jump-starting life, but that microbial life helped give birth to hundreds of minerals we know and depend on today. It's a theory of the co-evolution of Earth and life that is reshaping the grand-narrative of our planet’s story.

NOVA PBS • 2016 • Environment

58:58

A look at humans who live in the depths of the rainforest, a perilous environment.

4/8 • Human Planet • Environment

9:58

Earth's current problems and how to help in conservation efforts

Environment

47:47

In a Horizon special, naturalist Sir David Attenborough investigates whether the world is heading for a population crisis.

Horizon • 2009 • Environment

58:45

Human Planet tells remarkable stories of people who make their homes in the Arctic.

3/8 • Human Planet • Environment