Alternatively, stability can be defined as the speed with which an ecosystem returns to a particular form following a major disturbance, such as a fire.
As urban land becomes increasingly scarce, in the absence of adequate clean-up, pollution incidents associated with land contamination in China are increasing.
The food groups are replaced with unlabelled, multi-colored vertical stripes which, in some versions, rise out of a cartoon jumble of foods that look like the aftermath of a riot at a grocery store.
Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date.
Teachers, it is thought, benefit from the practice of reflection, the conscious act of thinking deeply about and carefully examining the interactions and events within their own classrooms.
What happens to the centralized electric grid, which took decades and billions of dollars to build, as more and more people become "prosumers", who produce and consume their own energy onsite?