Terra Preta: black is the new green

Amazonian Dark Earth, or terra preta do indio, has mystified science for the last hundred years. Three times richer in nitrogen and phosphorous, and twenty times the carbon of normal soils, terra preta is the legacy of ancient Amazonians who predate Western civilization…Claims for biochar’s capacity to capture carbon sound almost audacious.

Cuba: the accidental revolution

The Nature of Things with David Suzuki celebrates Cuba’s success in providing for itself in the face of a massive economic crisis, and how its latest revolutions, an agricultural revolution and a revolution in science and medicine are having repercussions around the world.
Part 1: 7pm July 30 CBC
Part 2: 7pm August 6