variability

“That constitutional requirement never came with any required set of health care services or standards or systems of oversight, and so what you get is total variability,” Sufrin said.

“In these higher level brain regions, what we're seeing is massive variability in outputs, and we can get all these new and weird kinds of responses that develop,” Vaccaro said.

"The question is whether this acceleration is something persistent linked to human activities that means we will have steeper warming in the future, or whether it is a part of natural variability," Dr Gößling adds.

Climate change is also generating greater storm variability.

Regardless, I scroll on, inspecting my heart rate variability and stress level — snapshots that influence the tone I carry into the day.