In 1962, Rachel Carson's book Silent Spring opened America's eyes to the dangers of pesticides and man's place in nature. This episode of the "Before/After" series dives into the genesis of a poetic and powerful text, which inspired modern environmentalist thought.

Bacteria, viruses, but also fungi, algae, pollen, and even insects: micro-organisms thrive and circulate constantly in our sky. How can so many living beings find their way into the air and circulate? How do they survive? And what influence do they have on our lives and the living world? Biodiversity, health, climate: it is only recently that scientists have begun to understand how this discreet aerial "plankton" affects our lives and our ecosystem. But despite their many virtues, some of these micro-organisms are now threatened by human activities. With the help of experts and 3D models, this scientific investigation plunges us into the heart of a still mysterious world, and reveals the diversity and fragility of the air we breathe.

INVISIBLE HAND is a “paradigm shifting” documentary about the creation of ‘Rights of Nature.’ The defining battle of our times where nature, democracy and capitalism face off in rural America. From Executive Producer Mark Ruffalo comes INVISIBLE HAND, the world’s first documentary film on the Rights of Nature Movement. A “paradigm shifting” story about the fate of capitalism and democracy where we find out "Who speaks for Nature?"