People in eastern Congo are massacred to facilitate smart phone upgrades of ever diminishing marginal utility. Forests are felled to make “personalis… - George Monbiot

[T]he Earth’s systems are highly complex, and complex systems do not respond to pressure in linear ways. When these systems interact (because the world’s atmosphere, oceans, land surface and lifeforms do not sit placidly within the boxes that make study more convenient), their reactions to change become highly unpredictable. Small perturbations can ramify wildly. Tipping points are likely to remain invisible until we have passed them. We could see changes of state so abrupt and profound that no continuity can be safely assumed. Only one of the many life support systems on which we depend – soils, aquifers, rainfall, ice, the pattern of winds and currents, pollinators, biological abundance and diversity – need fail for everything to slide.

No political challenge can be met by shopping.

Fisheries science asks: "How many fish can we keep taking?" Marine ecology asks: "What would living systems look like if we stopped?" Even practitioners often mix them up.