Re-imagining environmental governance: Gold dredge mining vs Territorial Health in the Colombian Amazon.

This article describes and analyses an encounter in the Colombian Amazon between Indigenous practices and arrangements to manage their environment and the conservation policies of the State. Indigenous peoples understand their world as populated by powerful human and nonhuman beings; for them, the moral duty of achieving happiness and abundance for all implies sustaining reciprocal and respectful relations with these beings (including the State). In contrast Colombian environmental policy distinguishes between nature and culture, seeking to safeguard landscapes from human interference so that natural processes can unfold unhindered.

Insects for peace.

Insects such as the black soldier fly (BSF) are a nutritious feed component for livestock with high protein levels. BSF can be reared on a wide range of organic residual streams. This allows for local production within a circular agriculture, decoupling livestock production from import of expensive feed components, such as fishmeal or soymeal.

Classification and Use of Natural and Anthropogenic Soils by Indigenous Communities of the Upper Amazon Region of Colombia.

Outsiders often oversimplify Amazon soil use by assuming that abundantly available natural soils are poorly suited to agriculture and that sporadic anthropogenic soils are agriculturally productive. Local perceptions about the potentials and limitations of soils probably differ, but information on these perceptions is scarce. We therefore examined how four indigenous communities in the Middle Caquetá River region in the Colombian Amazon classify and use natural and anthropogenic soils.

Dynamical Monte Carlo modelling of organic solar cells: the dependence of internal quantum efficiency on morphology.

We present a dynamical Monte Carlo study of the dependence of the internal quantum efficiency (IQE) of an organic bulk heterojunction solar cell on the device morphology. The IQE is found to be strongly sensitive to the scale of phase separation in the morphology, with a peak at approximately 20 nm for the PFB/F8BT system studied. An ordered, checkered morphology exhibits a peak IQE 1.